I agree totally....The aquarium is totally compatible with Win XP and is grogous I might add. I ran serene screen with the RC 1 of XP without any problems and have had it running on the os of Win XP since Oct. 25 when it was released..I don't know how anyone could make that statement..This aquarium is the best going...Keep up the good work ,Jim and I do hope the 1.0 is available to us very very soon..I am looking forward to seeing the new scenery.........a fateful fan