Will Backup from Time Machine Repair the Mac HD?

I discovered today (while trying to move my HD partition) that my Mac HD "disk needs to be repaired using Recovery HD."  I'm admittedly not very computer savvy, just enough to get myself in trouble.  So I'm wondering, if I attempt to reformat and restore from my Time Machine backup, will I simply introduce the same problems?  I've never reformatted before, so I'm beyond nervous.  I'd like to install Mountain Lion, but I'm assuming I need to repair this problem before doing so.  Am I wrong?  Is this something that's just beyond my capabilities and should be left to those at the Genius Bar?  Any advice is appreciated. Thanks! 
Daniell

The directory errors it is reporting are usually minor and repairing from Disk Utility is almost always a safe operation. I would proceed with these steps:
1. Boot into recovery mode and repair the disk
2. Boot back into OS X and update your backups
3. Install Mountain Lion
4. Use the Mountain Lion recovery mode to wipe your disk
5. Reinstall ML and use the migration assistant to restore from your backup
That should eliminate both errors in your backup and any problems that might be caused by upgrading a potentially corrupted OS X installation.

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