What we will be doing is updating the WIN-OS/2 session attributes to add some DEVICE_DRIVER statements.
From the OS/2 Desktop:
You are now on the Program Settings for the PC/3270 object, just like we
were before when we did the majority of the setup above.
C:\LSP\RESETOKN.SYS C:\LSP\DXMA0MOD.SYS 001 C:\LSP\DXMC0MOD.SYS 400000010135 C:\PC3270W\PCS802.SYS V=N
Note: "400000010135" is the locally administered address (LAA) for the LAN, it may be optional and different for your installation.