WordPress MU

I have an insite login page on the main blog, and I'd like every blogger to use the same login page as well. I'm using the "Insite login" plugin on the main blog.
They would never need to see the default wordpress login page, even when they come to their new blog for the first time, and then they need to see the admin panel of their own blog after logging in.
Is this possible?

http://wpmututorials.com/how-to/custom-branded-login-screen-for-wpmu/

Thank you very much. :)

There also exists a whole 'rebranding' package here:
http://premium.wpmudev.org/project/rebranding-wordpress-mu

Is it updated yet? :)

Dunno, but works on 2.7 well :)

It wasn't listed so I wanted to make sure.