Don't make us buy Vista
From all of the press I have read it is plain that Vista is a big bomb. To buy the cheapest version I hear it isn't even as good as XP SP2. At the same time you need at least 4 Gig to run it. Offer other options... I don't care if it's Linux, XP, or a rat running on a wheel. Don't make us buy Vista.
You can read more about this the OS options Dell offers here.