I bought 3 USB's from DVR and two bridges from Tiger Direct

I hope I will get this thing to finally work.  I bought an extra Tivo on Ebay and caked it, I want to change all my standard receivers to TIVO.  I went a bit nuts.  Three RCA Tivo's with 250gig hard drives.  I can't wait to be able to share movies between them once they are networked.

Will I be able to play movies from my hard drive?  What format do they need to be in to play them on the Tiva box?   I am addicted to UTube and downloading torrent movies constanly.

Thanks for all your help,

I miss the DSS Helper days, but this is almost as much fun.