Probably way to late to be helpful..
I am currently banging my head on the same vein of problem. My development laptop has failed its HDD and my IT department wants to replace it with a generic consumer laptop.
Panasonic semi-rugged toughbooks (the CF-53) have a PCMCIA slot, and a real serial port. (an issue for me since I also need to deal with programming a TTC CDAU)
Might I suggest a different approach? If funding will stretch, you may want to consider adding an ETH101 or an ethernet-enabled BCU (the 105 ?? not sure )
I am transitioning away from PCM based programming and data extraction, over to Ethernet.
The other alternative is the SAM/DEC/008 if it ever reaches production - USB based SAMDEC. But I believe it is in development limbo. Besides, for the cost of the SAM/DEC/008, you can get a BCU/105 or an ETH/101.
Just offering an alternative perspective since I am in the middle of the same problems myself.
Regards,
Pete