Hello im having trubble with my computer. I have aim but when I click on all the icons nothing will hapen. Nothing will even load. I have uninstaled it many time's and it still leavs the icons up but now its saying that it can't find aim. then i reinstal it and it does nothing all over again. Can soneone help me out give me some advice on what to do? also does n e one know how to defrag the computer and cleen the manager and what not?