Speeding Up Windows

I just managed to speed up my parents' computer a huge amount by disabling indexing in Windows, as shown here. Seriously, it's like having a whole new computer; for people who don't use the Windows search feature often, this thing should definitely be off. And Google Desktop is better for searching anyway. I went pretty nuts for a paper deadline before break, and now I'm relaxing; my usual pattern, which hopefully I'll be able to break and actually do work ahead of time. I know, unlikely, but one can dream.