I have also got some problems like this in VB6.0 which if I make a code in the menu which supposed to be pops up the Help file
VB Code:
  1. Private Sub mnuContent_Click()

  2.     SendKeys "{F1}", True

  3. End Sub

But it doesnt work at all, well it gave me no choice but to make a small form frmHelp
and recode it like this and it pops the Help File...

VB Code:
  1. Private Sub mnuContent_Click()

  2.     frmHelp.Visible = False

  3.     frmHelp.Show

  4.     SendKeys "{F1}", True

  5.     frmHelp.Hide

  6. End Sub


BTW, the HELP file was also integrated in the Project Property.