Opening a help window, just as a dialog window is opened. (events)

Hi,

I want to open up a help window, just as a dialog window is built. InitDialog displays the window before the main dialog window is seen. And I was wondering if there was any other event that I could use. The main dialog window must be visible and built though, so the user can use the help to navigate through that window.

I checked all the events and couldn't see one that I could use, maybe GetFocus??

Thanks,

- Mark