i have noticed time and time again that when you install a fresh copy of windows on a pc it runs great and has minimal processes running therefore taking up very little RAM. About a couple of weeks ago i installed a fresh copy of windows on one of my computers, when no programs were running it had 473476k of phisical memory avalible (my pc has 640mb PC2700 RAM). Now a couple os weeks later after installing about 2 avarage non demanding games and using the internet a lot is has usually 393654k avalible, that number is steadily dropping!!! processes have gone from 25 to 27 as well. my question is, how can i remove useless processes to speed up my pc and keep memory usage down or what is the best way to do this??? any help greatly appriciated!