On of the applications I've written to exercise my TCP/IP code for DOS is an IRC client: Requirements: - Hardware: 8088 class with 192 to 256K of RAM - Display: All of the classics - OS: DOS 3.3 or better. (I tested once with 2.1) - Ethernet: something with a packet driver Besides physical hardware, it works in DosBox if you get the build with NE2000 emulation. Features: - TCP/IP is built in. Just provide the packet driver - Backscroll buffer, logging, timestamps, ... - Runs well on the slowest hardware Go here for more details: http://www.brutman.com/mTCP/IRCjr.html Yes, it's a shameless plug. But I like using a classic interface when I talk about vintage machines, so this is the perfect IRC client for me. And the more people that use it, the more testing I get on the TCP/IP part. Regards, Mike