Losing personal data with Cc Cleaner

First, I am using Windows XP + Mozilla Firefox..Second, I am not highly technical

I need to know which boxes to UN-TICK so that I do not lose my googlemail & Yahoo log-ons..my bank account logon

some possible interference with paper sizes in my printer set up and my google gadget set up, when I activate the cleaner!!

The CC cleaner was added to my PC whilst I was having some trojans removed by a repairer..