cookies delete if no passwords saved your fucked..via any site that use them
the tools option is a delete program uninstall
the tools start up can delete your start up programs

its like MSCONFIG
if you dont know what to click on i advise not to use it
http://forums.windowsforum.org/index...howtopic=30145
read the 3rd post down on the thread..
google is your freind via this just look before you leap
and always make a back up copy...
hope this helps you
http://www.ccleaner.com/help/tour/