Am running Win XP.The reason I asked was because I was thinking of running WinHoldem poker bot and if the poker client even gets a whiff of Winholdem u get kicked out.But now that I have read many many posts on the winholdem web site I doubt I will be buying any bots as it seems you have to write your own scrits for the programme to run and the last thing I have time to do is learn computer language,so many thanks as always you guys were great.