Hey, I have a problem, my computer keeps tellign me i'm running very low on disk space, and that i need to free up a lot of space on my C drive ( i have some 542 MB left), I have gone into Add and Remove, and have deleted a lot of stuff ( some that I even still use, but thought i needed to delete it to free up space), but it still says i'm low. I want to install this game (americas army) but it wont let me because it says i have no disk space left. I'm doing disk clean up, but i don't think that will be enough. I have about 20 GB in music on my computer, but I don't know where all of the other 18 GB are coming from? There are also a lot of things in my Add Remove file that say like " Windows XP HotFix - KB72281220" or something like that, and have random numbers. What are they? Do I need them? Please help!