Installing sql notification service

Hello, I'm trying to install sql notification service on my laptop, but its giving me an error saying that the .net framework should be installed. I have the .net framework 1.1 and vs.net 2003 installed. Any one have any ideas what would cause this??The error is from dumb Install Shield installer that will not detect what is already installed in the box because the stupid application goes to Install Shield website to extract the file it thinks it needs. If you say no it terminates the install operation. Hope this helps.