I followed the procedure to install piwik. All went through fine.

When i tried to run /piwik on browser got some errors related to directories in temp directory. So added 777 permission from root (/piwik).

After all this correction, when i try to run piwik, i get the following error

include(C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/tmp/templates_c%%DF^DF8^DF8D327D%%structure.tpl.php) [function.include]: failed to open stream: No such file or directory
in 'C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\libs\Smarty\Smarty.class.php' at the line 1263
#0 Piwik_ErrorHandler(2, include(C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/tmp/templates_c%%DF^DF8^DF8D327D%%structure.tpl.php) [failed to open stream: No such file or directory, C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\libs\Smarty\Smarty.class.php, 1263, Array (this => Piwik_Smarty Object ([=> Array (0 => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/plugins,[=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/themes/default,2 => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/themes),[=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/tmp/templates_c,config_dir => configs,[=> Array (0 => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/core/SmartyPlugins,[=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/libs/Smarty/plugins),debugging => ,[=> 6143,debug_tpl => ,[=> NONE,compile_check => 1,[=> ,caching => 0,[=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/tmp/cache,cache_lifetime => 3600,[=> ,php_handling => 0,[=> ,secure_dir => Array (),[=> Array (PHP_HANDLING => ,[=> Array (0 => array,[=> list,2 => isset,[=> empty,4 => count,[=> sizeof,6 => in_array,[=> is_array,8 => true,[=> false,10 => null),[=> ,PHP_TAGS => ,[=> Array (0 => count),[=> ,ALLOW_SUPER_GLOBALS => 1),[=> Array (),left_delimiter => {,[=> },request_vars_order => EGPCS,[=> 1,compile_id => ,[=> ,default_modifiers => Array (),[=> file,cache_handler_func => ,[=> Array (),config_overwrite => 1,[=> 1,config_read_hidden => ,[=> 1,default_template_handler_func => ,[=> Smarty_Compiler.class.php,compiler_class => Smarty_Compiler,[=> Config_File,_tpl_vars => Array ([=> /piwik/Index.php,piwikUrl => http://charityambassador.com/piwik/,[=> http://charityambassador.com/piwik/,piwik_version => 1.4,[=> Installation/templates/welcome.tpl,steps => Array ([=> welcome,1 => systemCheck,[=> databaseSetup,3 => databaseCheck,[=> tablesCreation,5 => generalSetup,[=> firstWebsiteSetup,7 => displayJavascriptCode,[=> finished),allStepsTitle => Array ([=> Installation_Welcome,1 => Installation_SystemCheck,[=> Installation_DatabaseSetup,3 => Installation_DatabaseCheck,[=> Installation_Tables,5 => Installation_SuperUser,[=> Installation_SetupWebsite,7 => Installation_JsTag,[=> Installation_Congratulations),currentStepName => welcome,[=> 1,newInstall => 1,[=> The configuration file {C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/config/config.ini.php} has not been found.,currentStepId => 0,[=> 9,percentDone => 0,[=> 100,nextModuleName => systemCheck,[=> ,previousPreviousModuleName => ,[=> ,totalTimeGeneration => 1.112,[=> 0),_smarty_vars => ,[=> Array (),_foreach => Array (),[=> Array (),_conf_obj => ,[=> Array (0 => Array ([=> Array (),files => Array ())),[=> f8d698aea36fcbead2b9d5359ffca76f,_version => 2.6.26,[=> 0,_compile_id => ,[=> SMARTY_DEBUG,_smarty_debug_info => Array (),[=> Array (),_file_perms => 420,[=> 505,_reg_objects => Array (),[=> Array (modifier => Array (),[=> Array (postEvent => Array ([=> smarty_function_postEvent,1 => ,[=> ,3 => ,[=> 1),url => Array ([=> smarty_function_url,1 => ,[=> ,3 => ,[=> 1)),block => Array (),[=> Array (),prefilter => Array (),[=> Array (),outputfilter => Array ([=> Array (0 => smarty_outputfilter_cachebuster,[=> ,2 => ,[=> 1,4 => 1),[=> Array (0 => smarty_outputfilter_trimwhitespace,[=> ,2 => ,[=> 1,4 => 1)),[=> Array (),insert => Array ()),[=> Array (),_cache_include => ,[=> ,_cache_include_info => ),[=> Installation/templates/structure.tpl,cache_id => ,[=> ,display => ,[=> Array (),_smarty_old_error_level => 6143,[=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/tmp/templates_c%%DF^DF8^DF8D327D%%structure.tpl.php,_cache_including => )) called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\libs\Smarty\Smarty.class.php:1263]
#1 Smarty::fetch() called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\libs\Smarty\Smarty.class.php:1263]
#2 Smarty->fetch(Installation/templates/structure.tpl) called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\View.php:136]
#3 Piwik_View->render() called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\plugins\Installation\View.php:57]
#4 Piwik_Installation_View->render() called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\plugins\Installation\Controller.php:88]
#5 Piwik_Installation_Controller->welcome(The configuration file {C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/config/config.ini.php} has not been found.) called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\plugins\Installation\Installation.php:72]
#6 Piwik_Installation->dispatch(Piwik_Event_Notification Object ([=> FrontController.NoConfigurationFile,_notificationObject => Exception Object ([=> The configuration file {C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/config/config.ini.php} has not been found., => ,[=> 0, => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\Config.php,[=> 121, => Array ([=> Array (file => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\Piwik.php,[=> 1913,function => init,[=> Piwik_Config,type => ->,[=> Array ()),1 => Array ([=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\FrontController.php,line => 205,[=> createConfigObject,class => Piwik,[=> ::,args => Array ()),[=> Array (file => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\index.php,[=> 57,function => init,[=> Piwik_FrontController,type => ->,[=> Array ()))),_notificationInfo => Array (),[=> 0,_notificationCount => 0))
#7 call_user_func_array(Array ([=> Piwik_Installation Object ( => Piwik_Installation_Controller),[=> dispatch), Array (0 => Piwik_Event_Notification Object ([=> FrontController.NoConfigurationFile,_notificationObject => Exception Object ([=> The configuration file {C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik/config/config.ini.php} has not been found., => ,[=> 0, => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\Config.php,[=> 121, => Array ([=> Array (file => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\Piwik.php,[=> 1913,function => init,[=> Piwik_Config,type => ->,[=> Array ()),1 => Array ([=> C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\FrontController.php,line => 205,[=> createConfigObject,class => Piwik,[=> ::,args => Array ()),[=> Array (file => C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\index.php,[=> 57,function => init,[=> Piwik_FrontController,type => ->,[=> Array ()))),_notificationInfo => Array (),[=> 0,_notificationCount => 0))) called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\libs\Event\Dispatcher.php:213]
#8 Event_Dispatcher->addObserver(Array ([=> Piwik_Installation Object ( => Piwik_Installation_Controller),[=> dispatch), FrontController.NoConfigurationFile) called at C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\PluginsManager.php:458
#9 Piwik_PluginsManager->addPluginObservers(Piwik_Installation Object ([=> Piwik_Installation_Controller)) called at C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\PluginsManager.php:330
#10 Piwik_PluginsManager->reloadPlugins() called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\PluginsManager.php:219]
#11 Piwik_PluginsManager->loadPlugins(Array ([=> CorePluginsAdmin,1 => CoreAdminHome,[=> CoreHome,3 => Proxy,[=> API,5 => Widgetize,[=> LanguagesManager,7 => Actions,[=> Dashboard,9 => MultiSites,[=> Referers,11 => UserSettings,[=> Goals,13 => SEO,[=> UserCountry,15 => VisitsSummary,[=> VisitFrequency,17 => VisitTime,[=> VisitorInterest,19 => ExampleAPI,[=> ExamplePlugin,21 => ExampleRssWidget,[=> ExampleFeedburner,23 => Provider,[=> Feedback,25 => Login,[=> UsersManager,27 => SitesManager,[=> Installation,29 => CoreUpdater,[=> PDFReports,31 => UserCountryMap,[=> Live,33 => CustomVariables)) called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\core\FrontController.php:217]
#12 Piwik_FrontController->init() called at [C:\inetpub\vhosts\charityambassador.com\httpdocs\piwik\index.php:57]