I tried the cheat as it was described on the site, but it didn't work. I've attached a screenshot from my Windows 98 VM where I'm running the game.There is a -startroom=xxx command line option. This will start the game in any specific room in the game, unfortunately it uses numbers to identify the room. For example if your command line to run LSL Casino is c:\sierra\lcasino\lcasino.exe then changing it to c:\sierra\lcasino\lcasino.exe -startroom=20000 will start the game at the WON.net login screen. If you have Windows95 or 98, right click on the LSL Casino desktop icon and select properties. Change the command line to include the option you wish by adding a space, then -startroom=, then the corresponding number.
All it does is take me to my room. Is there a step I'm missing, perhaps?
Anyway, if I can get this working, I'm wondering if I can find the extra rooms that aren't available offline, since the data is already in the game files somewhere and not actually online.
Al Lowe released his game design document for the game a few years ago (available here). There are some descriptions of the upgraded rooms on page 15 on that document.
Thanks for the help, anyone crazy enough to still have this game laying around!