Microsoft made a massive change in how optical drives are interfaced to with all their 64-bit versions (XP, Vista, Windows 7).
MTU and many other companies have not been able to catch up yet. We tried last year and we do have READ code in Microstudio and Hoster that works. However, we failed to get new WRITE/DUPLICATE code that works reliably.
It is important to MTU so we continue to work on this problem. However, I can't give you an estimate right now as to when we might have new code that works reliably.