Printer API needed

Hi

I want to add a user to my network printer so that he/ she can print any document on my printer (Network printer).

Currently I am able to add any user manually by following steps:

1. Select printer
2. Select property of that printer
3.By going to security tab
4. Selecting permissions
5. Add use
6. Assign rights to user

I want to add / delete user to network printer programmatically.

Tell me is it possible or not.

Regards,

Suman