I plead ignorance amongst you experts and call me extremely cautious, too! I have to install an older version of 10.6 to my iMac, which is now running 10.6.7. The version I'm supposed to be running is 10.6.3. I use Carbonite, NOT Time Machine. So I know I will have to start with the disk that came with my mac. Am I going to regret this? Will it wipe all my Adobe Apps and files, etc.? I also have to use an older version of Safari! Is there a safe way to do this without having to reinstall every durn app and file? Carbonite is NOT backing up system files either. Will a reinstall wipe screensavers, etc.? PLEASE HELP! Thank you! Any advise is greatly appreciated. Also, if this subject is already out here, I'm sorry but I couldn't find it!