Hi,
Actually that particular value has no affect on the dialog and the help has been updated in TestStand 4.0 to reflect this:
WinFileDlg_SHOWHELP–(Value: 0x10) This flag has no affect and should not be used. The Help button is always visible.
Unfortunately, there is no way to link the Help button to another source but that's sounds like worthy
product feedback. Your best option would be to create a custom file dialog that fits your needs. If you have LabWindows/CVI, the FileSelectPopup may be a good start.
Have a great day,
Ecleamus R.
National Instruments
Applications Engineer