The Dell Latitude D630 exceeded all my expectations -- and I am an extremely demanding computer user

it came with a 1.8 duo-core processer and only 1gig memory and 60 or a 80 gig harddrive with win vista busness,, 
ok for entry level but, 
i turned up the onboard video memory to max and jacked up the memory to max level of 4 gig pc2-6400 and added a faster processer T-7500 duo-core 2.2 and bought extra hardrive caddys for a switchout of the harddrives,1 came with it has vista on it ,1 has a 250 gig drive with xp on it and the other has a 620 gig drive with windows 7 on it and bought an extra drivebay caddy (put a 1 terbyte harddrive in it) that goes into the slot where the dvd burner goes and can swap out the dvd burner for the 1 terabyte harddrive when i need to save large files. 
also have a floppy drive that can be switched out for the dvd burner if needed. 
and can swap out the windows system harddrives by taking out 2 screws ,takes about 2 minutes/less from shutdown to boot back up.. 
i saw on ebay where they was some T-7700 2.4 duo-core processers for it also,,might upgrade it some more later on..

almost forgot ,changed out the onboard wi-fi card from 802:11b/g (54mbps) to faster 802:11n(300mbps) wireless . 

not much else you could want in a laptop if you take the time to do the upgrades to it..good luck with yours, i love mine after i did the upgrades..