I would like to get an old single floppy DOS laptop
machine
 on my local network. Anyone know how to get DOS to work with
 a PCMCIA card (uh too new?) 
Well....  One question comes to mind, if it's a single floppy laptop (I
translate that as meaning it doesn't have a HD), does it even have a PCMCIA
card slot?  If it doesn't, does it have an bidirectional parallel port
(isn't that called EPP?).  If you have the PCMCIA slot, you'll need to find
a card that is old enough that there was DOS support for it.  Hopefully you
can get one that includes the drivers and instructions.
Warning, setting such a thing up is not fun.  The next question is, what do
you plan on using for networking software?  Such things for DOS weren't
exactly common either.
                        Zane