I am not sure which one offhand to download as the softwear for that particular Race frame, but the download site is right here for all of the Raceguns.
RACEGUNS.DK
A Caveat for the racegun cable: They take a really funky port on the computer to connect. They are not just the normal USB compatible. I want to say it's a 7 pin plug looking thing, but I don't have mine handy to check offhand at the moment. Some older computers have a port for them, but on many newer ones you may be out of luck. I was looking for an adapter cord thing for a while but never found anything that was quite right- I wasn't looking obsessively or anything so they are probably out there. Just figured I would let you know that side of it too.