Well, I've set up the wired part to my main PC, and all seems to be working fine (certainly no problems with Outlook Express & FF - haven't tried anything complex like eDonkey yet though).
When I'm happy it all works I'll set up the wireless card in the other PC & see if that works too
Incidentally, I've changed the admin password & turned on WEP and generated some passkeys - doesn't seem to do anything but I assume I'll find out what those are all about when I try to link the other PC
In the meantime is there anyway of finding out what wireless connections have been made so far and to which PC? Hopefully the current answer is 'none'