i just got a new laptop, and it doesn't have a serial type connection. i would like to make my own programming cable that would be compatible with one of the ports on my computer instead of having to buy the $25 cable, and wait for 2 weeks to get it. my computer does have an s/pdif port 3.5mm, which can send digital data signals for sound, it has an e-sata port, and rj45, mini fire wire, and 3 other audio output 3.5mm jacks