You need a 100-110VAC ballast light assy, I might have a used one in a couple of months, but I can get them new from Sega for around ?35, but obviously a lot cheaper if you can get one from your local hardware shop.
If i was you id either take out the lamp and take it to a local shop and let them show you what you need. Or order a used lamp setup and put in your new bulb...