If your site is Joomla CMS based website and in case

If you want to add few custom fileds like add birthday ,

membship number, SS Number in signup form, the

solution to this is pretty straight forward just by

Installing a Community Builder module you get a

powerfull features full of  the functions are there in

the admin panel. Add as many additional fields as

you want to add:

Joomla 1.5 Components

Here are few notes that are published on below URL

about Community Builder..

http://extensions.joomla.org/component/option,com_mtree/task,viewlink/link_id,210/Itemid,35/

Community Builder suite (CB) extends the Joomla!

user management system. Key features: extra fields in profile,

enhanced registration workflows, user lists, connection paths

between users, admin defined tabs and user profiles, image

upload, front-end workflow management, integration with

other components, like PMS, Newsletter, Forum, Galleries.

Release 1.1 is compatible with all Joomla! 1.0.x (including 1.0.13)

and 1.5 and Mambo 4.5.2-4.6.4. See announcement on

our homepage, and for CB 1.1 Joomla 1.5, the stickies in forum.

New CB version 1.2 RC brings Joomla 1.5 components and 1.0

native compatibility, multi-criteria user searches, full field

controls of core fields, ajax email and username checkers,

new lost username/password form and many more

features and fixes.

I am sure the above article helps you ☺

The Author of this article Rakesh Patel is

AVP (Asst. Vice President) at www.IndiaNIC.com