Create logins in SQL server 2000 with C#

Question

I want to make a program that creates new logins for users from a source (might be a text-file or an Access database). A default password should be assigned to the user and is also read from the same source (for example the zipcode). The login should also be addes to a role in one of the databases on the server. Is there anybody out there who can help me with this or give me an URL where I can find information to do this. It all has to be done with C#.