I was beginning to experience memory limit problems on my C Drive. After doing the typical things that MS recommends, like deleting Temporary Internet Files and Removing programs that are not used often, I was still having issues. Those are more or less stop gap measures and don’t really do much.
I came across Linda’s Computer Shop where she has a tutorial for actually removing all of the temp files on your system. The procedure was easy and worked great, actually freeing up over 5GB on my C Drive. That is huge.
I would highly recommend her site for good solid fixes to common XP problems.