Visual Studio 2005 or 2008

Question

So, I've been using Visual Studio 2003 for about 4 years now and really, I don't have any problems with it, but lately I've been able to use VS 2005 some and I like a lot of the features it offers over 2003 as well as some of the .NET 2.0 additions. So, now that I'm finally going to upgrade, should I really buy the "old" version now that 2008 is out? I have several concerns going to 2008:

1. I have not used it so I am not sure how much has changed from 2005
2. I am currently use VS 2003 on both XP Pro and XP Pro x64 Edition and do not plan on moving to Vista, but everything I read about VS 2008 is about Vista.
3. Can you create .NET 1.1 or 2.0 applications on VS 2008? (On a related note, can you create .NET 1.1 applications on VS 2005?)
4. I am currently using Perforce for my Source Control and while I have read it will work with 2008, I haven't found any actual users that have tried it.
5. I develop very little for the web and most of my software are client/server applications and it seems, from what I've read, that 2008's focus is web related.

Sorry if I seem to be a bit picky and naive, but I am a self-employed programmer and I have a very limited budget for this kind of thing so I would like to make sure I make the right choice.

If you can help me answer some of my concerns, that would be great. I have downloaded the trial for 2008, but I am not sure it will be able to give me enough of an idea if it is the right thing, after all, most of my projects are 6 months to several years so 90 days may not be enough to let it show its true colors.