hi all, I've a domain with 2 controllers (a win2k with SP4 and a win2003 R2 with SP1). I'vw changed the whole operation masters to win2003and I want that exchange matches itself with win2003 but when ever I want to install exchange in the begining when I want to do a forest prep it prompts "Exchange has a known compatibility issue with this version of wndows" and doesn't let me to this. Please help if any of you has faced such problem before Sam