Help please if you can

I was wondering if you guys could me out with a problem I'm having. The problem is that I can't get a program called NRatings to work on my vista computer, There use to be a patch for this to work for vista but that link is dead so I'm stuck with an error message such as: "Component .NET Framework 3.5 has failed to install with the following error message: "The service cannot be started, either because it is disabled or because it has no enabled devices associated with it. " The following components failed to install: - .NET Framework 3.5 See the setup log file located at 'C:\Users\Home\AppData\Local\Temp\VSD5211.tmp\inst all.log' for more information." Or when I run it as admin and window service pack 2 compatibillity "Windows Service Pack Update Information You must install this service pack to complete installation. Microsoft .NET framework 3.5 requires this to be installed prior to installation." Could you help me this?