There is a possible way of getting PCMCIA USB 2.0 cards to work. However, I did not have any success doing this. Check out cbenable.zip on hobbes.nmsu.edu. You might like to add more money to the bounty on
http://www.os2world.com/cgi-bin/news/viewnews.cgi?category=57&id=1133292057
to see if someone can actually write the drivers.
cytan