Datacolor User to User Support Group.

I've been a Windows guy for many years but about to get a iMac. I'll
continue to do my photo printing with Qimage (a Windows only program)

How is monitor color managed with an iMac running Mac programs then
switching to XP for Windows only programs? Does monitor calibration in
Mac start up  still valid when running Windows? Or does each operating
system require separate monitor calibration?

If I do all photo printing w/XP and Qimage will my present printer
profiles (copied over to the iMac under windows) still be valid?

OT Any real issues running PhotoshopCS3 under iMac vs Windows? Or has
Adobe really made PS run equally well under both systems?