Well, a couple of 300+ page manuals later, I'm actually making progress!

Fired up hyperterminal (I keep an old laptop running XP for just this sort of thing) and got into the console interface. No problem setting up the desired VLANs, but there is so much other stuff that has to be right, I think it's gonna take some more experimenting (a.k.a. "playing around") to get it right.

Fortunately, geek stuff like that is my catnip. 2 AM with stuff strewn all over the desk, manuals open, fans whirring, and bad words coming out of my mouth - that's what makes life worth living!

Mucho thanks for the links, Dave. I'm in nerdvana.