Dell XPS 1640 Has no COM ports available for legacy GPS PCMCIA hardware

I have a problem. I have on older PCMCIA Card GPS antenna that works with my Skymap 2000 map software. I found a PCMCIA to Express card adapter made by DUEL called the DUELAdapter. It was about $50 on ebay and is about $120 new. It is suppose to support all 16/32 bit PCMCIA cards. It installed correctly using the drivers I found on their website, http://www.duel-systemsadapters.com/, my problem is my GPS reciever can be installed using the driver from the standard 2400 baud modem (and have done this in previous installs) but to do that you have to have a COM port installed (you know like COM!, COM2, etc) When I try to install it there are no resources available on my XPS 1640. So I get a conflict and any of the IRQ/Memory Addresses or unavailable. Therefore, I am at an impasse. (IRQs and memory addresses) , I have made this GPS receiver/ software package work on everything, Win98, Win2k, WinME, WinXP, and Vista until I bought this Dell XPS with the new fangled Express Card Slot. My question is how can I free up resources? When I go into Device Mgr. and System Devices, and try to add a Legacy Device, COM Port it adds COM Port 1, but their are now avialable IRQs or Memory Ranges. All seem to be use by the PCI bus and the X386.