[cobalt-users] [RAQ4r] invalid character in username?

["Andrew Witham" <awitham@xxxxxxxxxxxx>]

One of my site-admins was setting up a new user with a last name that
included an apostrophe.  The new account was accepted, but does not appear
in the GUI for the site.  Re-entering the same name without the apostrophe
responds 'user name already exists'.  This is a virtual site, with a unique
IP address in anticipation of future SSL requirements.

Since this user was entered, none of the site admin's have access.  I have
deleted and re-entered the virtual site, and re-booted the server, all to no
avail.

We assume that the problem was the apostrophe?

How can I delete this user-name to allow re-entry without the apostrophe?

I am a GUI user not a Linux expert - so I need kind & simple instructions
that assume I know nothing~!

Thanks

Drew