they you go again its NOT mainly for registry cleaning use !! thats a separate part of cc cleaner ,for cleaning out all the rest of the "crap" hence the name crap cleaner) it the best prog,
as ive said and daffy on here even using both of these options weve had no problems in many years of use,
....extract from the link below....
...I would like to see a tutorial or wizard for first time users when they run CCleaner. Too often the complaints that CCleaner deleted something it shouldn't, turn out to be the user isn't too familiar with what the options mean or what the impact of cleaning temp files and settings from their system. Even selecting every possibly option should still not damage windows in any way - as CCleaner is very conservative in what it will remove, but for some first time users, running CCleaner can seem to be a scary step to take.
However, if simply freeing up disk space is your objective then CCleaner is hard to beat.
http://www.techsupportalert.com/best-free-pc-cleaner.htm