What do you recomend? Install Vista as an upgrade to XP Pro or clean install to another partition ( ex. D: while XP is on C: ) or clean install only with Vista RC1? Is there anything important that I should do in any scenario (ex. in dual booting)? Then, which AntiVirus to choose, is Win FireWall good enough to replace ZoneAlarm or Kerio and what about Virtual drives (ex. Daemon tools) is any working? Is Nero 7.5.1.1 compatibile with RC1? Thanks.