First of all I was really happy that so many people showed up and got as far into their construction as they did.
27 people and only one dead board.
I now know that getting all of that done in under 3 hours was a little ambitious. (The pacing was initially based on the photo session at http://www.flickr.com/photos/7175086@N05/sets/72157604783725339/ which took 20 minutes from start to finish)
For those of you who were unable to finish the cable Jacob Hedwig has provided a clear picture of a working cable at
http://www.flickr.com/photos/jacob_helwig/2485841122/in/set-72157605009944742
Pin 1 is on the bottom (Red wire in this picture) on both ends.
Pins -> USB
1 -> 2 (Rx)
2 -> 1 (Tx)
3 -> 7 (+5V)
4 -> 4 (Reset)
5 -> 3 (Ground)
The important thing is to count up from the side of the cable with the leds on it.
I am looking to have a second session for software as soon as I can get a room scheduled (this sunday or some sunday soon). In the mean time you can download the software (http://www.arduino.cc/en/Main/Software) and poke around at the main site (http://www.arduino.cc/). I will also be at the bi-weekly dorkbot meeting at the Lucky Lab NW tomorrow (May 12, 19th and Quimby) between 7 and 10 and will bring a soldering iron if anyone gets stuck or wants to finish up their board.
Feel free to email me as well.