hello, noobie here. just downloaded ccleaner, and after it analyzed, it displayed a list to "clean".....but there were programs that i had downloaded not only because i needed or wanted them, but some that are just necessary...such as adobe flash player, etc. also stuff like my divx, bearshare, vlc player, realplayer, quicktime, windows media player etc etc etc....where i have videos and music etc that i want to keep. so just exactly what will be deleted should i hit the "clean up" buttton? just useless fragments and unnecessary trash that i will never miss? or will i do it, and then go: OMG what have i done???!!!! lol! yeh i'm scared! help!