Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Please see this thread for updates. Update Thread
SOH ADMINISTRATION"Nice"?
"Right now, if you want a working FMS, you have two options:"
I know of a 3rd option. A working FMS can be got by purchasing Ernie Alstons Intergrated Simvionics FMC/FMS. If you cannot be bothered creating your own panels , many users have created custom panels of default and common aircraft that add these functions into the panels. A great way to jazz up your 737 with great functionality
See here; http://isgsim.com/
Your other possible option is to get a freeware B737 and the add-on FMC pack from Ernie Alston, which isn't perfect, but can be edited in to just about anything flying:
