Header Plugin

Hey,

I came across a thread with links to a global header plugin that are no longer live. Can I download this plugin from somewhere?

Is there any way to create an ad space globally across all blogs in an installation?

I looked into the global footer plugin very briefly and wasn't really sure how to add content. I did a test adding some content and the text appeared below the footer and off to the right in the new 2010 theme and didn't seem to be getting any styling from anywhere, also appeared to be placed in the middle of some code from a running plugin using the footer as well.

Also, confused where to put the update.php stuff since there isn't an mu folder in the multisite installation i'm running.

Thanks for some guidance, once again i'm trying to have an add or text placed across all the blogs of a mulitsite installation.