Hi. When I start my new comany, I want to offer domains to my customers. Here are my questions.

-Do you buy all the domains under 1 account?
-Do you give your clients acess to the domain control panel if they want to add extras?
I want to get a idea on how i should sell them and buy them.

Get a resellers account. Most will allow you to create an account for them. They'll have their own access to do as they wish. I would suggest this as it gives them a sense of security knowing they have something tangable although it's intagable. eNom resellers has always been my choice.

For a prepackaged solution I suggest http://www.awbs.com/index.php

?
if you want to be a domain reseller
try following domain resellers
godaddy.com , enom.com or directi.com
you do not need to buy and resell. you start a domain reselling business on your website. your customers register domains via a control panel

I've great experience with directi reseller a/c.
Lowest price, lots of features and very easily brandable. :)

Hello there OliverHost,
We use an eNom reseller account, and Yes we do register most of the domains in one account unless the client wants to have full control over his/her domain name.
So far we are satisfied as with eNom's support staff and with their userfriendly control panel. Things go smooth and no error's so far.
Hope this helped you ;)

Goodluck.