Since this is intended to be an answers thread, I figured I'd re-post the following info to summarize it in one place.
To add a PS/2 Keyboard:
Look for a 4-pin white connector located near the hard drive power connector on the board. On my board it's labeled as 1801. Pin 1 is toward the back of the board. The correct pinout for this connector is:
1 -> Data
2 -> Ground
3 -> Clock
4 -> +5V
The pinout for the standard PS/2 mini-DIN connector can be found at http://www.networktechinc.com/technote.html
To add a VGA monitor:
Look for a place for a 6-pin connector that is not populated. This should be immediately behind the hard drive. On my board it's labeled 1151. Pin 1 is toward the TV Tuner/RF module. The correct pinout for this module is:
1 -> R
2 -> G
3 -> B
4 -> Ground
5 -> HSYNC
6 -> VSYNC
The pinout for the standard VGA connector can be found at http://www.networktechinc.com/technote.html
More to come as I get detailed info on everything.