Thanks for the info. Ill be using this trick for Windows 7. Now I can save some cash. I have a oem vista license so I could upgrade from that but I would feel better about upgrading windows 7 over itself for the cleanest install.
I just upgraded from 7022 to 7048 with no problems. I had that problem your having when I upgraded from 7000 to 7022. I forgot what I did to fix the problem but if I remember ill post it. I plan on a clean install for RC1 but didn't see the need for this upgrade.