To install it:

  1) rename \os2\com.sys to \os2\oldcom.sys
  2) rename \os2\mdos\vcom.sys to \os2\mdos\oldvcom.sys
  3) unzip COMMGA.ZIP
  4) copy com.sys to \os2\com.sys
  5) copy vcom.sys to \os2\mdos\vcom.sys
  6) shutdown and reboot the system.

These new drives provide an additional Setting.. HW_COM.  Setting this on
allows for a VDM to release its com port.  This allows programs such as DB
and several others to properly re-set.
