i am running latest firmware 9.3.2b. i do plan to upgrade the hard drive using WinMFS. i've also read about pytivo. i don't know exactly what this does. will this allow me to copy shows/movies directly from my computer to the tivo. i'm not interested in streaming videos from my computer. how about tivo zipper and tivowebplus? what features do these provide? i'm also open to any other suggestions you experts might have.