I picked up a couple of these serial cards that look to be the short length.
(they're at home and I didn't write down the number)
They've got three RJ-11? jacks and a DB 25 female port.  
a) are they of any use?  (since my 340's slot is full)
b) can they be used in a 330? (since flip has one :) )
c) does anybody want one?