Hi,
Thanks Jim for his great answer!
From Jim's suggestions, the following codes runs well on my machine.
Private Sub Command0_Click()
Call Shell("c:\Program Files\Adobe\Acrobat 6.0\Acrobat\Acrobat.exe
c:\a.pdf", 1)
End Sub
Thank you for your patience and cooperation. If you have any questions or
concerns, don't hesitate to let me know. We are here to be of assistance!
Sincerely yours,
Mingqing Cheng
Microsoft Developer Community Support