CCleaner works great and have passed on to many friends. Also, keep a copy on thumb drive to use when I'm troubleshooting other PC's.

Questions:
1) Cleaner (Brush Icon)>Windows tab>ADVANCED: Can anyone direct me to where I can find info about whether/when I should use these options, how to use, safety, etc?

2) Issues (Registry Icon): REGISTRY INTEGRITY & FILE INTEGRITY: Can anyone direct me to where I can find info about whether/when I should use these options, how to use, safety, etc?

Thanks,

HW

This topic here may answer some of your questions
http://forum.ccleaner.com/index.php?showtopic=1504

Welcome to the forum