Hard Drive Dying

My hard drive is dying, and I'd like to thank Circuit City for selling me that apparently only has a one year warranty.

Anyhow, so far everything seems to be not so bad, I’ve only found a folder of random music that had a file I can’t work with anymore.

Is there anything I can do so save the disk from getting worse?

Any way to section of the bad sections so I can continue to use the rest normally?

Thanks