i have one of the new g5 ipods, video etc 30gb

i have had it for a few weeks now but my computer is fooooked. i'm not gonna be fixing the computer till after christmas, thing is, i only got around to putting 2 albums on the ipod before my pc crashed

my brother has a g4 ipod (click wheel) and hundreds and hundreds of albums on his version of i-tunes on his pc.

my question is, can i plug my ipod into his pc and download all of his cd's onto my ipod, bearing in mind that the ipods are different.

i understand i will lose my stuff on my ipod, but it aint much

anyone done this before???

cheers