it'd be a good idea to check out that model on dell's support site. you can use that to find out what drivers are required; make sure there are drivers available for what you're trying to do. When the vista switch occurred I ordered a bunch of dells for the school i work at. vista was no good so we tried to roll back to XP, but the motherboard had no XP drivers. We wound up going HP instead due to a more general build with no proprietary drivers required - just make sure whatever you buy has drivers available!
I buy all my stuff at motorcyclegear.com, formerly newenough.