Hi friends, is it possible to modify a already activated Windows XP Professional from Retail to OEM state by adding/changing the "oembios.*" files, maybe from a WinPE boot cd? Or do i have to reinstall the system with a OEM prepared XP-CD-ROM? The only problem i have, that the system i want to change to OEM is full installed and some self made applications arenĀ“t available anymore (some controlling/financial accounting software) that are running on this rig. Thanks for your help! All the best, TR2N