>I actually found no reason to use .NET 3.5 either. But I just remembered that I do have one reason to update to VS 2008 but I will look into how much it is. Do you know if VS 2005 can be used independently with VS 2008 on the same PC?

I don't know, sorry. I would assume you can have both.

I have VS 2008 and VS 2010 Beta 2 installed now and both are working OK (except for VS 2010 seems to be quit slow).