I'm also running eCS 1.2R (and OS/2 Warp MCP2 before that) on this board. I'm not using the onboard LAN, either, but everything else I've tried on it works well.
How to distribute your program among all users/potential customers? Add the program to eCo Market. 1) Fast distribution, 2) No need to write the announcements every week. 3) All popular applications are presented in the catalogue already.