Thank you, Bill, for your reply. I did go through all the steps you advised, however, even after uninstalling MM, rebooting computer, reinstalling as your instructions, still get the same 'wrong serial number' message. I did not use the auto-install as you instructed...seems I've got more of a Win 7 Pro 64-bit problem than a MM problem!

I know most people on the forums I've visited applaud Win 7....but I'm 65 years old, disabled, been computering since 1969 (keypunch back then) and know most everything about XP Pro....all my web design software was basically created for XP....(checked compatibility with 7 before I purchased machine....all said "Compatible"....NOT so in some cases!!)....this will probably be the last computer I ever buy......and I want my XP back!! I'm told it would be a mistake to clean this new machine off and install XP Pro on it.....so not sure what I will do at this point.

Thank you for your time. Glad it worked on your Win 7 machine. Been struggling with Win 7 for the last 6 months....about to give up on it. Just seems to be too much trouble especially when it takes 3 days on Win 7 to accomplish what I was always able to on XP Pro in less than 8 hours!! That's a pretty sad 'review' but it's what's happening at my house these days.
Again, I appreciate your time. Have a good one!
Janice