Thanks Dave.
Yes, it's a Level 3 switch, and I have no intention of using tagged traffic if I can help it.
My problem right now is getting past the password left over and finding its' Ip address, before I can even think of messing with the configuration.
I've located a couple of books that may shed some more light on what I'm trying to do, so off to the library and order them.
I'm kind of assuming once I get the hang of it, it should be pretty straightforward to maintain and change the configuration, but right now the initial steps are the stumbling blocks.