Getting completely off topic... We have promised that 1.1.0 supports XP / Vista. Would be quite nasty move now to tell users than XP is not supported So, it is not an option with MP1. ...now back to the topic.that doesn't seem a sin to me..... xp in not yet sold and vista too....all new HW is sold with win7, why still supporting xp ? I know many user that are happy with the 1.0.2 version and Xp. Go ahead and make MP ok just on the ACTUAL windows 7.e. For Windows 7 we already have OS based API to tell, but XP and Vista users are left in cold.