No, you'll have to purchase a new copy of Windows XP
and install it on your other computer.
On the back of the Windows XP box, please read the statement
"For installation and use on one computer"
(see License Agreement for license terms).
To access the License Agreement on your XP computer, go to:
Start > Run and type: WINVER , and hit enter.
Then click on "End-User License Agreement".
You can also open XP's "Help and Support" and type: EULA
and hit enter. Click on "Questions and answers about the EULA".
The End-User License Agreement states quite clearly:
"You may install, use, access, display and run one (1) copy
of the Software on a single (1) computer...."
Each installation of Windows XP, installed on a different computer,
will require the purchase of a new license (Product Key).
Otherwise, you'll not be able to activate XP on the subsequent installations.
--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User
Be Smart! Protect your PC!
http://www.microsoft.com/security/protect/