[Coco] Does anyone know how to start OS9 Sierra games?

[Roy Lores]

Does anyone remembers how to start OS9 Sierra games on the CoCo? (Well i 
actually use VCC emulator) I do type the DOS command and OS9 does start 
but from then on I don't know how to make the game run. The only command 
available seems to be Startup and all that does is give you the same 
initial message when you boot the OS9 game with the command prompt 
staring at you.