Advertisements i read somewhere a while back that even though wireless-g adapters are now supported, the transfer rate w/ them is still about the same as wireless-b. is this the case? i'm thinking of getting a wireless-g adapter for my second tivo (first one is hard-wired to the wireless-g router), but i'm not going to bother unless it will increase the transfer rate. both units are 240 boxes and are running v7.2. sorry if this is a repost, but my searches didn't turn up an answer.