sign-up into 2 or 3 separate categories?

I would like to have a different sign-up process into 2 or 3 different categories. Each with their own set of profile fields and listings. How can I manage that from the admin panel?

I think what you are looking for can be accomplished through one of these mods:

The basic one:http://www.boonex.com/unity/extensions/entry/Profile_Types_Splitter_Basic

The more more advanced one of the basic: http://www.boonex.com/unity/extensions/entry/Profile_Types_Splitter_Premium

Thanks very much for this.