Sorry to answer my own post (from yesterday) Just to let people, who might have the same problem know:
For Maxxtro Fast Ethernet cards (RTL8139 chipset) with kernel 2.6: Modules needed: PCMCIA support (yenta module), cardbus support, 8139too, 8139cp The latter two are _not_ in the PCMCIA Ethernet Adapters section, but in the 10/100 section. That was my problem: the PCMCIA howto said that I shoud use modules from the PCMCIA section, or something like this. L
