The cable that came with my XSi is only 6'. I don't have a laptop, so I can only shoot tethered on my desktop. not too much of a problem since I shoot most where the computer is. I'd like more reach, so I bought a usb cable with regular on one end and female on the other end. When I connect the Canon cable to the extension cable, the camera is not able to attach in tethered mode. the only option I get i nthe EOS utility is manage folder. Anyone know what's going on, and if or how I can get more reach? I'd like to have 10-12' total reach.