Do you lost your windows key?

[EricB]

http://www.tweakxp.com/

it also tell you your msoffice key too

 

[Osiris]

RockXP is free

 

[southernlady]

You can also find your XP or ANY Windows key this way:
Everest Home Edition
Belarc System Management
They will ALSO give you the keys to many of your other programs as well as lots of other data. Liz

 

[killians45]

you can NOT get the product key for anything post ME by just finding it in the registry... you have to use some software, like whats listed above, because the product key has been encrypted.

 

[DJ-CHRIS]

Everest works for me