Вот в нете нарыл почитайте должно быть интересно:

Вот в нете нарыл почитайте должно быть интересно:
1) Download and install Windows XP Service Pack 2
2) Find the following files (normally in your c:windowsservicepackfiles)
- ntkrnlmp.exe
- halmacpi.dll
and copy them to your c:windowssystem32 folder. (This is considering your new motherboard has ACPI support. I know that these files will support non-ACPI computers as well, but that has not been tested)

3) Open up boot.ini in your text editor and find the following line:
multi(0)disk(0)rdisk(0)partition(1)WINDOWS=?Microsoft Windows XP Professional? /fastdetect /NoExecute=OptIn (or something of this sort)
and replace that line with:
multi(0)disk(0)rdisk(0)partition(1)WINDOWS=?XP Professional MP? /fastdetect /kernel=ntkrnlmp.exe /hal=halmacpi.dll
Make sure there are no line breaks in that line.
(backup your boot.ini and your hardware profile if you want, that might be a good idea)

Now reboot, go through the installation and reboot of the new kernel and you are done. To test that you have SMP or hyperthreading enabled, hit ctrl-alt-del and task manager to see two seperate graphs for the processors.

Да и кстати вот boot.ini:
[boot loader]
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect /sos
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional HT" /noexecute=optin /fastdetect /sos /kernel=ntkrnlmp.exe /hal=halmacpi.dll

Это все может испортить ваше оборудование и НЕРВЫ, так что никто не несет ответственности, за ущерб!!