Zend Studio php path problem

[misheck]

I have just installed Zend Studio and I am trying to run my first Hello word or phpinfo but its just showing a blue php box meaning the php is not configured properly on Zend Studio. I have Vista Home Premium, Apache 2.2 , Php 5.2.9(or the latest Mar 9 Php) and I have tested both scripts on localhost and they are running ok but in Zend Studio its not running.

I have tried to run the code by going to the panel on the left, right clicking the project, then choose open with and selecting the PHP WYSIWYG/HTML.

I think my problem is to do with the path for the ZendStudio for the PHP but I dont know how to configure it. Any help would be appreciated.