keep an eye out for slickdeals.net, people have been grabbing 700m's and 6000's this summer for $800. They always have coupons and deals for dell. Also keep a lookout for dell flyers, they have one time use coupons on the last page, most of those are stackable on deals. Get a locking cable too, I go to rutgers in new brunswick/piscataway, my first laptop got stolen there.
I didn't want to scare you off about the crime it's not that bad if you dont wander alone at night or do drugs, probably 95% of the crime is related to people doing that.
If this is a 2nd computer not a desktop replacement, apple has the student deal going on, and the iBooks just got updated. For $899 you get a 1.33GHz g4, 512 333MHz ddr, radeon 9550, bluetooth/802.11g and a free ipod mini or money applied to another ipod. My iBook is the slightly older one with the 1.2GHz g4 and radeon 9200, its slower than any dell would be, but its small, plays ut2004, and I think the ease of os-x is great for mobile use. The only downside is if you want to use windows x86 apps.