about the GhzTiBook i am not sure.
the distance. i got an ibook and sorta went for a walk around my apartment complex recently. since i am not from america and have no idea how far a foot is, and i suck with distance in general, let me just say that i got pretty far from my house. if i had to guess how many meters and convert it to feet i would say i was somewhere in the region of 100ft or so, and the wireless was working fine.