i have a pc notebook with the following specs: 14" 1024x768 screen, celeron 2.4ghz, 256mb pc 2700 ram, 40gb 4200 rpm hard drive, dvd/cdrw combo drive. i dont use it for anything especially intensive, just office, aim, browsing the internet with firefox, a wee bit o' photoshop, a few games, stuff like that. im considering one of the following 3 upgrades: buying a used 17-19" crt monitor to span onto (i can get a 17" at a shop down the street for like 20 or a 19" for like 40 or 50), getting a 512mb stick of ram (105 bucks from crucial, about 80 used down at the afforementioned shop) or a 7200rpm drive. (i think about 150 for the e7k40 from hitachi?). i feel cramped by the small screen size and the lack of ram slows it down, but the hdd's slowness isn't really prohibitive. what do yall think would be the best upgrade (cost vs. benefit) for me?