Library III server?

I work for a city government and we are trying to provide public access
wireless in our library branch locations.  We hope to allow users to
login using their name and library card number for authentication.  We
have an authentication server that we are using as our primary source of
authentication for all other library apps.  It's is made by Innovative
Interfaces, Inc. (http://www.iii.com/) and speaks sip2.  There is an API
into it called the Patron API.  This is a web based interface that
allows you to authenticate against the III server.  Does anyone have any
experience with the III server?  Will NoCat work as our authentication
gateway?  How many users will it support?  Any help would be greatly
appreciated.

Thanks,
Evans Martin

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Evans L. Martin - IS Analyst
Metro Government of Nashville & Davidson Co.
615.862.4066 Office    615.862.6288 Fax