Accidentally deleted iTunes, is there anyway I can download it again and have it just back up my iPod instead of clearing it of all data? All of iTunes files are still on my computer, but the actual program got deleted.

I was trying to clear space on my C drive and decided to delete programs that I didn't use or that I didn't recognize. (Bad idea, I know that now.) Anyways, accidentally deleted a program that iTunes needed to run and the computer said it would undo the uninstall and restart to fix the problem but when it restarted iTunes was gone. So my question is, after I download iTunes again, is there a way I can just backup my iPod to it's last sync (which was coincidentally right before I accidentally deleted iTunes) instead it being cleared of all its data? All of iTunes' files are still on my computer except the actual program itself.