WordPress MU

I am new to Wordpress MU. I use dedicated server from 1and1. I installed Wordpress MU in one of the domain like blog.com. When i create a network i am getting the blogs as

one.blog.com
two.blog.com
three.blog.com

But i wanted the other networks in my blog as
blog1.com
blog2.com
blog3.com

Hope u understand my problem Please help me on how to do this. Thanks in advance.

WPMU is designed to do 1 of 2 options:
1. sub-domains (sub1.blog.com; sub2.blog.com)
2. sub-directories (www.blog.com/sub1; http://www.blog.com/sub2)

It's not designed to generate entirely new domains. How would it know you even had those domains registered? How would it write your DNS records?

But i wanted the other networks in my blog as
blog1.com
blog2.com
blog3.com

Search this forum for domain mapping.

...as it gets pushed back further and further. *sigh*