>pressing shift f5 does some regular code and calls another app. nothing special. There is no menu inthe application - it's just forms, with custom objects mostly. But it has to be shift F5, because that's the standard our application package works with. We have two systems. The main system has been in use for a long time, and the keys have been standardized, so, in the application I'm working on, which is a subset of the other, I have to use the same keyboard commands, so not using shift f5 isn't an issue.

OIC.
Where is the keystroke getting trapped?
There could be another way of getting what you want, w/o changing UI.