i dunno if you bought it yet, but i might as well put in a bit since im semi-looking for a labtop too-- i kind of run into the problem of not having any extra money though
if you're going to finance it do NOT buy dell, they will crap on your head or so ive heard. but if you're buying outright i think its okay, their service is bad but everyones is, plus their are some very good labtops from dell that are low priced.
the biggest priority in picking a labtop for me was how loud the things fan was and how fast it got hot, because i planned on using it outside a lot (why else buy a labtop i ask) and on my lap. the fan size you can only really tell hands on, but for the battery to last longer and for it not to heat up and fry your banana look for a pentium m.
generally, dont trust the salesman verbatim because their first priority is commission (hey, you cant blame them), maybe go to some labtop review sites like
www.cnet.com, read the review, user opinions, etc.. those are usually somewhat informative. if i had could buy a labtop i would've bought the ibm t40 or t35 because all ive ever heard is good things about it plus its supposedly very well built so it wont blow up if you like scratch it with a pencil or something.
just remember, research whatever you're going to buy first big time (use cnet, search on google, etc..) because if you dont know computers like me, and your computer fucks up on you, you will seriously want to smash it against wall which with a labtop is as easily done as said