mskeel,
I realize this info. is coming too late to help you but, perhaps, this might help someone else who is have a similar problem.
I don't know the actual 'correct' way to do this but the solution I came up with when faced with the same problem was a trick I learned when using Excel VBA.
Simulate the 'F1' key being pressed by using:
SendKeys.Send("{F1}")
I put that code in my 'mnuHelp_Click' event handler and it solved my problem.
Good Luck