After reading some comments someone suggested I do a small write up on CCleaner. It's another great program I use to remove junk/temporary internet files, remove invalid registry entries, and stop some programs from starting up with Windows(great feature).
This little piece of software definitely helps with speeding up things like startup, and scanning for viruses/defragging as after you've removed all of the crap that Internet Explorer and Firefox collect, you have less to scan.
If, after viewing the tutorial you have any questions regarding it, don't hesitate to contact me. As always I'll be available to walk you through using it or help you with any problems. Tutorial Below =]
Download link here, Click the Green Download Now button