Does anyone know if I can use the TiVo branded wireless G adapter with any other brand DVR? I had an original TiVo but this wasn't compatible, now I have a DirectTV DVR and it doesn't appear to be compatible either. Anyone know of any hacks or anything to enable me to use this. Otherwise it looks like it is eBay bound. As an aside what is the best combo to have with my Mac? Most of the wireless software looks only to be compatible with PC's. TIA.