Solved. See my post 3 or 4 down.
Somewhere there is free software similar to FabulaTech’s “Serial Port Redirector”. I stumbled onto it while researching the [RN-XV WiFly Module, which I just purchased. The software (as described by the article) makes a connection (telnet?) to a remote address:port (the Wifly module), and bridges that to a virtual COM port on the local system. Presto! Wireless serial cable to any (inter)network-connected computer. The article linked to a free port redirector meeting that description. Unfortunately, now I can’t find the article or the exact software it linked. The closest thing I can find after many hours of Googling is FabulaTech’s “Serial Port Redirector”, but they want plenty of coin for anything but a trial version.
Did I imagine it? Is there such (Windows) software in the freebie domain? Where?](http://www.sparkfun.com/products/10822)