Question about removing/reinstalling iTunes

I recently bought an external HD because iTunes was swamping my c drive. In migrating my iTunes folders/libraries over today, I obviously corrupted some files or screwed up, because I get error msgs galore and cannot open iTunes from either the new ext drive (H) or the C drive. It asks me if I want to repair or remove iTunes, but when I hit repair, it tells me files are missing and to reinstall.

MY QUESTION: if I remove all existing iTunes apps and reinstall, will I lose my entire iTunes music library? I just downloaded the latest vs of iTunes today, before all this foolishness occurred.
HELP

Video iPod Windows XP