I have a Modified RS-80N3 Canon 10D remote for remote camera control in the bulb mode. This allows software programs such as DSLR remote and Images plus to time your exposures for you and also capture the images. I have to buy the TN (programmable) version of this unit because I have to use my laptop for autoguiding.
The Cable was professionally modified. It still works as originally intended. The modifier cut the cable in half and placed a male/female 1/8 inch connector where it was cut and then made another connection to the parallel port to the computer. The Cable is long (approx 12ft). It works wonderfully.
The whole thing is about 4 months old and is in perfect condition.
The RS-80n3 cost me $50, and the mod cost another $60. I will deliver it to you for only $75.
Thanks, Joe D.