Reinstalling Itunes?

[fitworldmac]

How is this done? will it erase any of my media?

 

[-aggie-]

It didn't for me. I had to do a computer restore to back to a previous restore point (due to an issue that had nothing to do with the iPhone or iTunes), which was before I installed iTunes 9. That screwed up 9, but I reinstalled iTunes and everything was fine. I backed up my iPhone right after. Oh, and I had to deauthorize and reauthorize iTunes, because it wouldn't let me transfer purchases.