[Q] Problem One: I got a serial mouse to work in DOS no problem with the driver
that they supplied. However, the windows environment defaulted to the
trackball. So I used setup to modify it for use with a logitec mouse (what I
have) but then I lost the ability to return usage to the compaq trackball and
its nifty driver. I had to restore the setup using my tape backup. Is there an
easy way to switch back and forth between serial and trackball?

[A] This is what I did: in the mouse subdirectory in the file mousedrv.ini you
need to change two entries in the [Global] section:

ForcedConnection=Off
SearchOrder=Serial, PS2, Bus, Inport

(Read the file mousedrv.txt to understand what you are doing.) This will cause
the mouse driver to search for a mouse on the serial ports first before looking
for the trackball. Reboot the machine, whenever you attach or remove a mouse.
It works fine with my el-cheapo mouse when it is set to emulate a Microsoft
mouse. Automatic recognition does not appear to work with the PC-Mouse
(Mouse-Systems?) mode.