BenShep
You have to put the Aminet 3Com driver in the Devs:Networks directory. You have to make this directory first as it doesn't exist under a normal install. There may also be a driver just to place in the devs: directory as well, can't remember. Then you simply type in manually the device name under AmiTCP (I use Miami though). I'll check tonight and send to you the driver if you can't get it running.
Oh, there's also a program to allow for pcmcia resets so you can hot plug the 3Com card. More later....