Recently received a PM requesting some information on my serial cable and setup. I thought I would post my response here so that others may benefit:
I made my purchase from Mouser:
Serial Cable:
895-TTL232RGVREG1V8W
Plastic Header:
538-78172-0003
Pins for header:
538-78172-0410-CT
From RadioShack:
278-502 - 30 AWG wrapping wire
I used the wrapping wire to make the connection between the small header pins and the serial cable output. Be aware, you will probably need a high-power magnifier, as these things are *small*. I think I ended up using the edge of a knife to fold the 'arms' of the connectors onto the stripped wrapping wire. They fit into the white connector nicely, and mated perfectly with the connector on the Kindle Touch.
These parts are accurate for the Kindle Touch. Some of the other Kindles also need the socket to be soldered on the board. I do not have that information.
Cable datasheet:
TTL-232RG Datasheet
Cable information and drivers (you want the VCP drivers):
FTDI USB-to-Serial Cable information / Drivers
That should get you started.
