Other methods include a null modem, sneakernet using zip drives, but the pcmcia network card is the best bet. I would definately go over your plans with your dealer, they are more than willing to help you out with various options.
I don't personally have my Amiga hooked up to my pegasos, but that's because I cheated ;-) I just put my Amiga's hdd into my Pegasos and copied the everything over at once :-D
