If you are saying you just copied all the old files to the new machine thats the problem. The Mach install process does some stuff to install the driver and sets some registry values. Thats why the re-boot after the first install is so critical.
Download a full Mach kit from the web and run the install process on the new machine. After its installed you can replace the xml with your old xml to get back to your config.
You might also try to download the mach install manual and follow the steps in that. It is clearly spelled out and goes through all the needed steps.