davidjbrown,
Thanks for taking time with this and sharing your knowledge.
I got onto the Netinfo Manager all right, although the window it opened in said "local @
localhost - /. Never used it before, so I don't know if this would be normal
I checked each of the 23 "Users" and all of them had a list of "Values," including the one with my name on it.
I did not create all these "Users" as far as I can remember. They might be leftovers from the computer's previous "owner," an Apple store that used it as a demo. (I really wanted a G4 Cube and it was the only affordable "new" one I found.)
Anyway, nothing showed only a name or was called new _ directory, or any that listed only the name under "Values" and nothing els like you told me to look for and delete. I suppose I could delete the extra "Users," but I don't know if that would be a good idea. Some have scary names like Daemon and ROOT and complicated Values
Also, I clicked on "Groups" to see if there was anything fishy looking there. Nothing. I checked the "admin" Group, too. I don't know why there would be an admin listed as a Group, but clicking on all the groups listed, they seemed to have plenty of complicated Values -- not that I knew what any of them meant.
NOW I'M STUCK. I wonder what I should do

Would there be any de-bugging or virus or diagnostic software that could help?
Thanks for your reply. I hope what I said made sense and maybe you can think of something else based on what I said, or maybe you'll see what I did wrong.
egGSaladJUNKie