I've been looking at replacing my Marantz RC5000 with either a Marantz RC9200 or Pronto Pro. Currently the RC9200 is the favourite, mainly due to the RX77 RF extender being included and the extra 'hard' buttons. I've just been investigating set up software and looking on the Marantz site, under downloads, it has text saying ... "THE RC3200/RC5000i/RC5000/RC5200/9200 DOES NOT SUPPORT WINDOWS XP." What exactly does this mean? Anyone out there using XP and a RC9200???