Thanks, all, for the confirmation. I was hoping it was just for set-up, but that was not clear. The difference to me is that I want to put the router on the middle floor of a 3 floor house - two computers on the lower floor and one on the upper, but no computer on the middle floor itself.
David, I will keep your post handy for the tips on WEP and as a reminder to change the password.
Best wishes,
Teacher49