Is there a way that I can use for a regular expression to validate the username attribute? Something like User-Name =~ [0-9a-zA-Z.#_] I think . or # does not work. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ