Hi,

Sadly, OEM versions are generally tied to the hardware that they are
originally activated on and are not transferable to a new system. The
limitation is one of the reasons they are cheaper than retail versions. You
can try to activate by phone, you might get lucky, but in general you will
need to purchase a new license for WinXP.

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP
http://mvp.support.microsoft.com/
Associate Expert - WindowsXP Expert Zone
www.microsoft.com/windowsxp/expertzone
Windows help - www.rickrogers.org

"tahoemark" <tahoemark@discussions.microsoft.com> wrote in message
news:A11C331A-32E1-4890-9B41-3EAF9BF10903@microsoft.com...
>I decided to replace my aging motherboard and processor and now I'm asked
>to
> activate windows. I follow the activation process and it tells me that my
> product key is invalid or something like that.