IT Services is an authorized repair agent for both Apple and Dell. Educational pricing is available for both brands. Both Apple and Windows are widely used and supported at Swarthmore.
Go to this page for more info. Links on the left side take to you REPAiR and BUYING A COMPUTER..
Swarthmore College :: ITS :: Residential Technology Services
When my daughter enrolled four years ago, we were able to buy more computer at a lower price from Dell's online Refurb store than we were using the Educational Discount. When you shop packages, remember that Dell educational and business models include on-site service. Their consumer lines (and the stuff in retail stores) does not.
There are plenty of Linux geeks around campus, so getting support shouldn't be too tough on that end of things. My impression is that the Computer Society (that runs the media lab, etc.) is full of linux geeks.