I would load Windows 7 and forget about the Vista. You may have to update some of the drivers for some programs when you do but it will be worth it.
Don't be shy about asking for help from the Microsoft people. They are very good. I had a few problems and they were solved quickly with info from them.
Also, if you have the opportunity to do live chats with technicians while doing this, use it! They will answer all your little "in between" questions that come up and even send you a copy transcript of the conversation. Just ask them and they will do it.
Good luck with everything.