I don't understand, Terry. On your first post you said the "registration "
numbers were the same. After my post you said you were talking about the
numbers listed below the name at Registered To: , and said that those
numbers were the same. Those numbers are the Product IDs. I think we may be
confusing two different numbers. There is the Product Key, a 25 digit
alphanumeric number comprised of five groups of five digits. This is the key
you use to activate XP, and is usually on a sticker on the case if XP came
preinstalled; and on a orange sticker inside the folder that retail XP comes
in. The Product ID is generated when you install XP, it is shown under the
Registered To: name. The Product ID format is as Bruce stated, four groups
of numbers such as 12345-123-1234567-12345.