Hey Molly ,
if you want a good program for cleaning up and dfraging try the ones from
http://www.piriform.com/downlo...
CCleaner & Defraggler
they also have :
"Recuva" = a recovery program and "Speccy" so you know what your system is doing .
I use them and they are Awesome if you need help setting it up I can help you let me know I will pm you a Phone number and call you to walk you through the set up so you do not loose any important information once it is set up All you have to do is run them when you want without worry of losing any of your important info on you computer .
Did I mention it will Speed up you computer like Mad .LOL ;)
Sarge