Suggest some softwares to speed up my PC?

I use a few programs regularly some free some aren't. I use spybot search and destroy, adaware, ccleaner, super antispyware remover. Those are all free. I also use winsysclean2008 that one isn't free but it cleans so much. It even removes uninstall files for windows hotfixes.

Do you maintain your computer? You should go into Control Panel and Internet Options and delete the temporary files and cookies. You should also defrag your computer regularly and use disk cleanup, too. If you're not running virus software you need to get that as viruses, worms and spyware can slow your computer, too.