simo_415 over on the MineCraft forums recently updated his Single Player Commands mod for 1.3. What does that mean? I'm back up and running at full steam! Progress on dungeon 3/4 is going well, and I'll maybe post a video or screen shots when I finish it up.
In the mean time, if you guys are wanting some adventure map action, I HIGHLY recommend this one:
Gourd Avenger (Adventure Map) [By Akito12345]
The puzzles and scenery are very creative and the story is excellent as well. He's already got a sequel up so you'll have plenty of game time! Give them a shot, you won't be disapointed.