Need help about customizing extensions

[nadim]

I'm building a web application and I'm thinking about starting with joomla.

I was looking at the extensions / modules and found pretty much all the components that I need to build my website. BUT, they need to be modified and they need to work together. So I have a couple of questions hopefully someone can answer :

My website has 2 types of users, let's call them type A and type B.

1. I need a private messaging system. Is there any of the available extensions that would allow me to restrict A-users to message only B-users and B-users to message only A-users?

2. I need a classified system. Same problem as above, is there a classifieds system that allow me to restrict A-users to seeing only ads posted by B-users, and B-users to see only ads posted by B-users?

3. When registering, I need users to be able to choose the type of users they want to be, A or B. Is this implemented in the default registration system? Or do I need an extension for that?

4. Can different type of users have different fields on their profile pages?

5. Do the payment gateway extensions allow to charge different fees to different type of users for recurrent subscription fees?

Thanks for your help!

Nadim

[RussW]

Try taking a closer look at Community Builder, this allows many "customisations" and user configurations, there are also many many plugins for CB that should acheive most of everything you need.