Multiple Monitor Programming

I have never written a program for use with a multiple monitor situation (2 video cards and 2 monitors in 1 pc). I would like to write a program that uses a secondary monitor for display so that this secondary monitor will always be showing an updated graph and status report that will be generated based on input from another application that will be using the primary monitor and user input.

Will this work?
What considerations will I have to look at?
What implications could this have on the existing program for the primary monitor?

-K

I use multiple monitors by creating an oversized MDI form and placing child forms to display different information on each screen.
My applications are for process monitoring where an operator watches information recieved from a PLC while inspectors view and input data regarding the product being run.
This method requires no specific coding (except for setting up the forms) but does require that you know how windows is orienting the virtuallly enlarged display area.
An MDI form is not necessarily required but I like keeping the menu options on the primary display only. Another thing that works for me is to place the keyboard at the screen requiring input and the mouse at the other with suitable selection options on the forms displayed.
Once the screens are set up though you can even run two separate applications if you want.
There are probably other ways but this is simple and it works for me. Hope this helps.