i didn't. i ended up just reinitialize it over again. still had issues with freezing and whatnot. currently it's sitting on a shelf. i have neither the time nor energy to put into it.
ive heard some stories of people just throwing in a new board and re-installing and having it work.
i tried as a test a dell p4 3ghz just swapping the drive over. it seemed to boot okay and begin loading but got hung up on doing some file tests at boot. must have been freaking out cause of the drastic change in hardware.
i do believe that if i just re-installed with the new hardware, it could work okay.
i also did some poking around in the OS (stripped down windows xp embedded.) if you plug in a keyboard and hit "ctrl+alt+del" you can dump the game and get to a desktop. you should be able to get in and install some of the drivers you might need to run the new hardware if there is an issue. standard windows xp drivers will work.
it's not a cut and dry solution, and it's a bit of a rig job, but it might be worth the effort.
it just ended up being cheaper, easier and faster for us to shelf it and turn the cabinet into a golden tee with a kit, than to pay me hours and hours of time trying to fix it.
i hope this info helps.