Bless you Craig! That just may do the trick.
I did my own Google, but my search terms weren't as apt as yours. I got flipped to pages discussing how ISPs could set up virtual servers using Apache, and my eyes soon started to glaze.
Meanwhile, to make this topic complete I should also admit that since posting this AM I went back and checked at mydns.com. Turns out, whatever the issue used to be years ago when I first started using them, now I can foward a domain to any site or page or subdirectory with their control panel. Can forward email too. It's even free. No ads or nuttin. You just have to use their name servers, which I have done for 3 or 4 years now for one domain, no problemo.
So you can sign me off with a sheepish grin that the problem was even more simply solved.. but if I ever do need that Java script, now I also know where to grab one <grin2>