Originally Posted by selena

Okay, this may be stupid, so don't laugh at me. I know there is a way out there to do it, but I don't know what it is.

I would like a plugin that allows me to designate one blog as my 'main' blog, and to 'register' my other blogs within the main one.

Then when it was time to upgrade WP, I could update all the 'registered' ones from my main one with a single click.