It's just reprogramming a flash memory device. Could be a SIMM card, Flash board (044), or a compact flash card.
The type of equipment you need depends on the media you want to use. They are all pretty simple to use.
You can find the programmer for IGT SIMM/Flash cards on Ebay. There was a member here selling them too, not sure if he still is or not though. The main ebay source is in Latvia, but they have a good reputation.
Some desktop PC's have built in CF reader/programmer. If yours doesn't you can get a USB combination programmer that does CF, SD, and Micro SD pretty cheap.