User widget for all subdomains

I have a wpmu at, I am running 2.9.2. It supplies sites for real estate agents that are with our company through subdomains.
I am trying to build into the default theme a box that displays the user name (display name), avatar, bio, and email address.
I have the email address figured out, and I can show the blog avatar, but don't know how to show the user avatar. I can live with just the blog avatar but I can not figure out how to call the display name or bio.
If the user widget could be placed on the other sub domains, and the global admin be removed, I could live with that.
Help please!