Asterisk Web Pop-up on Call Answer.

I need a program that can pop-up a web page when a call is answered by someone in our asterisk phone system. The program has to be able to populate the caller ID name and number in the URL. You can ether modify an open source program (such as [login to view URL] or The Asterisk pluguin for the Spark Client for Openfire, We already have that deployed across our company) or create the program from scratch. The program would need to be configurable to what URL it opens, the Phone extension, and the Asterisk Manager interface (IP, User, and password) It needs to be compatible with Windows XP, Vista, and Server 2003. It would also have to be compatible for use in a terminal server situation as many of our users are using a terminal server. We are currently using SNAP to do it, however that is not working with Vista.