No, you cannot "run the same licensed XP Pro on your home and business PC"
unless you purchase a second license (Product Key).
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 copy
of the Software on a single computer...."
You can install one (1) copy of Windows XP on one (1) computer.
Additional installations requires additional licenses (Product Keys)
for each installation on a different computer.
HOW TO: Change the Product Key at the Time of Activation
http://support.microsoft.com/default.aspx?scid=kb;en-us;810892&Product=winxp
Additional Licenses for Windows XP Home Edition
http://www.microsoft.com/windowsxp/home/howtobuy/addlic.asp
Additional Licenses for Windows XP Professional
http://www.microsoft.com/windowsxp/pro/howtobuy/addlic.asp
--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User
Be Smart! Protect your PC!
http://www.microsoft.com/security/protect/