CUPS Port Driver for eCS and OS/2
Installation & Use
Unzip and put cups.pdr into x:\os2\dll and cupslpr.exe into x:\tcpip\bin
In your printer object properties, install a new port - specify x:\os2\dll and choose CUPS1 (if it's the first CUPS printer being added). Enter the hostname/IP of the CUPS server and the name of the print queue on that print server.
Try printing a file using the PostScript driver with the appropriate PPD file imported into it!