i would have thought a gender changer would be the easy option as it should just mirror odd wiring of the cable that came with it
eeeerrrmmm just re-read your post..... not sure now if the cable was ment to go into a typical printer port ??

i think i would be tempted to stick with mach3 get a cheap bob and go through the heart ache of deciphering the pins etc....?
maybe someone on here has more experience with that type of pci card and knows a workaround ?