text: Don't delete ANY hidden files; they are almost always hidden for a reason (needed for programs or operating system). \n\nIf you don't want to buy a new computer you can buy a new hard drive if you need more space, which you do (you can probably find a new 40 GB for $20 if you try). Having that little space left can significantly slow down your computer.\n\nBut I have to say it, buy a newer computer. ; )\n\nSeriously, I bought a computer at an auction (silent, not eBay) about a year ago that was at LEAST 10 times better than that (Pentium III, 128 RAM, 12 GB hard drive, CD-RW drive, monitor / keyboard / speakers), for only $16.67.