Multimonitor application: How?

PC: a Windows 98 system with 2 monitors connected, each using the same
screen resolution.
I have two forms in my application, one of them is the main form which must
be shown on screen 1.
The second form should be presented, under program control, on screen 2.
So far I have only be able to detect the form's "DefaultMonitor" property
but nowhere can I find help on how to address my particular problem.
Can anyone give me a hint?