EFI Bung in head update

well, I got a FTDI tti/usb arduino board on the way that Ill install in the MS so I wont need a serial cable anymore. I made a straight cable with cat5 and 2 DB9 M/F ends and it didnt work. Ohm'd out the wires and everything. Ill try it again with only the 3 pin mentioned. I tied every one in but that may have introduced a lot of noise. I dont need power, is that on 5 or 1? 5 and 9 were not used on another example. FTDI has a slick DB9-USB convertor, drops right into a PC boards DB9 footprint pin for pin but its a USB socket, you just remove your MAX232 chip and jump 14-11 and 13-12 in the socket, voila! Tried a Prolific (I think, one was a good looking company supplied 25 pin and one was a cheap 9 pin obvious counterfeit $1.34 cent EBAY joke. NO drivers worked on it) both never saw my MS, but could do a loopback on both once the cheap driver loaded correctly for one time. no biggie.