Triggering program from a daemon

[Michael]

Hi,
I wish to run a Windows program under Linux. It will be triggered
from another program when nobody is logged in; in other words,
it won't need a GUI; it's just doing number crunching.

How do I configure Wine to do this? When I run the program it
just says, "Wine exited with a successful status", but it is supposed
to create files etc, and nothing is really done. (It appears.)

Am I doing something wrong (I'm a beginner) ?

Thanks

/Michael