PROBLEM: Notebook w/PCMCIA ethernet & docking station ethernet / Multiple NICs / Only use one at a time

I have a Dell Inspiron 3700 notebook. I have setup Debian 3.0 rev 1 stable with a very clean install (setup virtually as described at this URL... http://www.osnews.com/story.php?news_id=2016
[EXCELLENT article for a relative newbie]). When I did the install I was at work and plugged into that network via my PCMCIA ethernet adapter. The IP is assigned dynamically through DHCP.
Everything worked like a charm. Get it home. PCMCIA card not used. Docking station with onboard NIC. Doesn't work (obviously). At home network I will specify the IP, gateway, subnet, etc...

PCMCIA NIC is 3COM 3CCFE574BT. Onboard NIC in docking station is 3COM 3C920 (3C905C-TX compatible). I figure I'll need to distinguish the two by their hardware addresses (obtained running "ifconfig
-a"). Let's say PCMCIA NIC is AA:AA:AA:AA:AA:AA and docking station NIC is BB:BB:BB:BB:BB:BB. I realize this may not be the way to do it, but right now seems most logical & most distinguishing.

Understand that I don't exactly know where to find the configurations stored (/etc/network??? /etc/pcmcia/network or /etc/pcmcia/network.opts???). I've plugged the PCMCIA card and booted in docking
station to see the two together and get most info. I realize eth0 & eth1 only appear when both plugged in, otherwise either one will always be just eth0 so that cannot be a distinguishing factor.

I need to know how to set the two up so it works off the PCMCIA card at work and off the docking station at home. Eventually, I also have a wireless Linksys 11Mbps card that gets used in both places,
but is more important to work at home so I can roam around the house (since I can usually plug-in wired at work wherever I am, so multi-use on this NIC is not required). Forget about the wireless
card if ya like. Throw in a little extra about it if ya like. I don't really care about that now.

Any more information is available upon request. I can give you very specific info, if necessary. The help is greatly appreciated. One more thing that is VERY IMPORTANT.... I have yet to install
X-Windows and would like to configure this all from command-line for now to learn more. Thanks!

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