You can get the connectors from Jameco, but (as someone pointed out) they don't sell the ribbon cable. Go figure. You can get the ribbon cable from DigiKey, in 5-foot or 10-foot lengths:
5ft Part# AM44G-5-ND
10ft Part# AM44G-10-ND
The 44-Pin connectors are also listed in the same PDF page, if you haven't ordered them yet. That might come in handy for the $25 minimum order.
I'm probably going to order a handful of the 10-pin headers (MSA10A-ND, or MSE10A-ND with strain-relief) for the VGA-Out and COM2, as well as some DIP-Switches (CT2184LPST-ND) so I can tweak the CPU settings. And top it off with the USB receptacle (WM17100-ND) and other needed resistors to get the 2nd USB port working.
By the way, Action Computers (on Lawrence Expwy nr Arques) sells the security torx driver kit for about $8 or so. It works perfectly.