Hi there,
I hooked up my Amiga 1200 to the Internet recently. First I installed MUI and then I installed MiamiDX. I used the install scripts included in the archives.
I had to install the 3Com device for the machine to recognize the Ethernet network card. This device can be found here:
http://aminet.net/driver/net/3c589.lhaThe beauty of MiamiDX is the Init-program. This one does all the configuration for you.

I tried using EasyNet first, but didn't manage to get it to work properly.

I therefore went the MiamiDX route.
Hope this was of help.

Good luck!
Okay, I have been busy with other stuff recently.
http://eab.abime.net/showthread.php?t=35373
This link, here, is seems to be a good guide.
I am assuming that there is no problem in using EasyNet's PCMCIA device with this software?