Just call the Microsoft activation center
You just have to call the Microsoft activation center and said you install the last version of Parallel on your MacIntel and they give you the new number.
But I have to say that reactivation number is a pain in the a.... for me too.
bdipert said:Like an earlier poster, I'm also having WIndows Activation issues. I'm running Parallels off an already-created and already-activated XP Pro SP2 Boot Camp partition (NTFS 80 GBytes....total HDD size is 160 GBytes). I get prompted to activate when I launch Windows in Parallels from the Boot Camp partition....and my already-activated Windows 25-digit product key is not accepted "According to our records, the number of times you can activate Windows with this product key has been exceeded.....". Help, please! And no, 'buy another product key' isn't an acceptable answer ;-)
You just have to call the Microsoft activation center and said you install the last version of Parallel on your MacIntel and they give you the new number.
But I have to say that reactivation number is a pain in the a.... for me too.