Thanks for the links,
the maddog website seems to be broken and won't allow me to place an order so that's maybe out the window.
I might look to get a few PIC chips to play with but I've done a little research on the internet on arduino based rapidfire setups so I might have a play with those as it seems simple to setup.
I'm surprised it wasn't really easy to find an older hex file online, I'm usually not bad at digging up stuff I need lol.