Looking for your CD Key for xp sp2
Go to C:\ i386 click on and go way down to see if you have the file UNATTEND and if so double click on it to open and scroll way down in the text and you will see your CD Key
If you do not see it do the following;
Insert your xp cd and browse and locate i386 and open it then scroll way down and find UNATTEND, double click scroll way down and you will see your cd key youcan copy or put a copy in your C:\i386 (of the file unattend) I copied the key and pasted it in notepad and saved to my documents as "CD Key"
Hope this benefits you