forget the adaptor... i just remembered that you said that the ports look identical.
try plugging your old monitor and your current 2001fp into the two available ports. this might wake up XP's plug and play features to give you a walkthrough in setting up dual monitors.
also, try checking the "monitors" tab under the "advanced" area in the display-settings control panel (as mentioned above).
fwiw, i can adjust my dual monitor set up under a tab called "displays" in the display-settings-advanced dialogue box. i can't make out enough of the text to see if you have that tab.
anyway, it's looking bleak. i would still get the monitor and invest the extra dough to buy a new video card and get it installed (if necessary). you definitely will not regret it... in fact, you will start trying to figure out a way to get three.
as for the SHLHE lessons... i'll definitely take you up on that.

thanks for the offer.