Help with database design?

[eluser]K-Fella[/eluser]
Hi folks,

I'm planning on building a site somewhat similar to a web hosting directory (using CI) and was hoping to get some input/advice on the database design (mysql) from all you coding gurus ;-P

I'd like to have two different types of users: 1) hosts 2) normal users

Because of the this, I'll need two seperate registration forms (with different fields). Will I require two tables in the db or can I combine them into one? I would also like to allow the host admin to be able to add/edit/delete users associated to that host.

What would be the best way to go about creating the database?

Thanks in advance