the delk, welcome to the forums, but all new members are reminded to please not piggy back other threads, though your problem is just as important, it is also important that your issue is addressed...

your failing to see what you asked and as a result you dont see why he responded as such. you were asking for the administrator password on a computer that might not be yours, for all we know your...

i didnt think the quick launch ate up barely any memory at all because it was just an icon for programs that you wouldnt normaly put icons on your desktop for, so you dont have to double click.
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run hijack this and fix any 019 entries, they have been known to cause browsers to slow down (their CSS style sheets and such that you dont need to survive)

boot your winxp (do you still have your xp cd?) if you do put it in the drive. go Start>run> Clear out anything thats in there and type SFC /scannow and hit enter. that will scan though your windows...