[web2py] web2py database administration

[stargate]

I just started using mySQL with web2py now my question is when
administrating the database from the web interface i added a new table
in the mySQL database but when i hit refresh in the browser the table
doesn't show up.  Also when adding another user I have to specify the
userID.  How can you change this so in the database you select the
maxID and add one to the ID.  Also when I delete the default users in
the database the default users come back.