B/X at Cal-Con

It looks like I am going to be running two sessions of B/X at the local convention here in Calgary - Cal-Con. It is the last weekend of March. I promised one of the organizers that I would have a brief description of the scenario to him in the few days.

So now I have to figure out what scenario to run. A few ideas that come to mind are:
- Chgowiz's "Kobold Caves of Terror" http://oldguyrpg.blogspot.com/2009/02/kobold-caves-of-terror-winterwar-game.html
- Sham's "Dismal Depths" http://shamsgrog.blogspot.com/search/label/dismal%20depths
- Amityville Mike's "Stonehell" http://poleandrope.blogspot.com/search/label/Stonehell
- The Tower of Zenopus with "In Search of the Forbidden City" http://www.dragonsfoot.org/php4/archive.php?sectioninit=CD&fileid=251&watchfile=0
- "The Endless Tunnels Of Enlandin" http://www.dragonsfoot.org/php4/archive.php?sectioninit=CD&fileid=163
- "The Haunted Keep" http://www.dragonsfoot.org/php4/archive.php?sectioninit=CD&fileid=234

Any ideas?