Hi! All!! my computer is having problems.. my hadrdrive only has like 600 free space.. im only 15 and im really scared if i mess things up.. i dont wanna broke it. but its really slow and everytime i open firefox.. when i open too many windows or tabs it says "a script on this page is stop because of low memory condition" or something lke that.. then one day windows closed firefox and said low virtual memory?? what is thatt?? i realy just wanna start off fresh!! so if you can help me!! please do!! thanks!! and please keep it as simple as you can.. thanks!! and by the way.. i dont have cd drie so i cant use the windows xp cd.. yeahh.. i dont know what to do..