HELP-Info needed USB - Serial Cable

I am trying to connect a newer computer (w/usb ports) to my toyota 850 embroidery machine. I bought a usb to serial adapter to use with the pre-existing serial cable and thought that would work but it did not. I called Datastitch today and they indicated that this seems to be a common problem encountered when updating to a newer computer. They suggested a BAFO (brand) cable. After looking at numerous web pages, I think I need the BF-810 cable...does anyone know specifically which one I may need? Also, if you have any other suggestions on adapters and/or cables that may work I would appreciate the help. Thanks!:D

Location: 
United States

I fortunately already had what I needed. Heres how I got my system up and running.

Starting at the embroidery machine this is what I have:

Radio Shack Serial cable (straight cable, meaning the wires inside the cable don't cross)
Null Modem (this is a small connection about an inch long which does cross the wires)
Serial to USB adapter..

It was all this simple. The reason I couldn't get it to work the first time was because I didn't put the Null Modem on. You can do without a Null Modem if the serial cable crosses the wires inside of it. I did not use a BAFO cable.
I hope this helps. Let me know if you need anything else and I'll do what I can to help you get going.