The past few months I’ve seen a lot of issues when people had to install Visual Studio 2008 and/or .NET 3.0 or 3.5. Mostly this is caused by beta software they’ve installed once.
Unatfortunetelly Microsoft’s Beta uninstaller aren’t always clearing the system as you would expect. Therefor, Microsoft released an uninstall tool for pre-released .NET 3.0 components.
As you can see on the downloadpage; the installer uninstaller is released in 2006. Far from new… But still useful!
Take advantage of it: