First it should be:
'sendMail' => array( 'class'=>'application.components.SendMail', ),
Note the absence of a dot at the end of "SendMail" instead of "SendMail". In addition, this configuration expects that you have the php file SendMail.php, in the protected / components directory, which is a class called "SendMail" and that this component extends CApplicationComponent. The component identifier will have the lower first letter, for example Yii::app()->sendMail , and this will return an instance of the SendMail class. I do not know what MailerConfirmation is, but if it is a method of the SendMail object, you should access it, like Yii::app()->sendMail->MailerConfirmation()
If this does not help, send the code and post the errors you get.
ddinchev
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