🚀 go-pugleaf

Greetings!
I have just installed the Doom Trilogy (Ultimate Doom / Doom II / Final 
Doom) on my Dell Inspiron 8500 laptop.  This system has a built-in fuzzy 
button mouse, plus a touch-pad pointer, and uses an external USB connected 
Mouse (no PS2 mouse port).  When running Doom, I can't get the mouse to 
work.  It works during normal PC use and also during the game configuration 
and setup, but when the game starts, the mouse is dead.  I've tried 
adjusting Mouse settings from the control panel, I've disabled the fuzzy 
button or the touch pad separately, and neither action makes the external 
mouse work when running the game.  The "Enable Mouse Support" box IS checked 
in the game configuration.  By the way, the laptop pointers also do not work 
when the game starts.  I have always enjoyed the Doom games but I'm used to 
using the mouse to play.
Can anyone offer a solution?
Thanks!
Scott