Will iTunes Delete My Music/Movies?

I have an iPod touch with some music, lots of movies, and 3 movies that I paid for from iTunes. I had the program iTunes on my laptop but yesterday it broke down. I fixed it but all my stuff is deleted. All my programs (including my iTunes, my pictures, everything. Gone. My question is though if I download iTunes again and connect my iPod to it will it delete all my music/movies, including the paid for ones? If so can I somehow re-upload my paid iTunes movies from the iTunes store again without having to re-purchase them? It dosent really matter if I can’t get my music back, but can I still keep my movies, eveb the ones from Limewire? Help!