Getting original xp key from pirated XP CD!!  

1.) Insert the CD in your drive.
2.) Right click it and select open.
3.) Open the folder named I386.
4.) In this folder there is a note pad file UNATTEND.txt
5.) Open this file and browse till the last line.
6.) You'll find there a original xp key.
7.) Use this key while installing xp and there are 98% chance that your copy of XP will come out of Windows validation as a geniune copy.