I am a newbie here on this site and would just like to extend my thanks to those who created this awesome little package called CCleaner! I absoutely love it to bits and so does my Toshiba laptop. Although I only have the free version (I cannot afford to get the paid version yet) I am very impressed with everything it does for me and I can say that it works well with my anti virus system AVG and it is a marriage made in heaven for these two little programmes. I have no need for anything else as it attacks all the nasties that come into my system in one clean sweep. Thank you and best regards to everyone.
A Happy Consumer

It doesn't cost money, unless you are refering to AVG?

I would recommend getting some anti-spyware software though, preferably Microsoft Anti-Spyware which is completely free.