Quite a regular question this one.
You could "try" and see if it will boot as it is. But almost certainly not. You could then try a Windows repair (see click here) and then installing your mobo drivers.
But to be honest you will still more than likely have problems.
As it sounds like you have bought a decent mobo / CPU, I would suggest picking up a new OEM copy of Windows home XP (only around £60 anyway)and doing a clean install.
I suspect some may disagree with me but this is my opinion of having tried it all ways (so to speak).