Newbie Question - Header

I recently dowloaded R2 and am trying it out. This may be a simple question, but I have tried to look for documentation but could not find teh same?

1) How does one change the "header text" where the title of the site and the tag line comes??

2) How does one rearrange the top menu items so that I can arrange the links the way I want them to be?

Thanks, and will appreciate any answers!

regards,

goutham

To edit the header text
administration>kernel>server settings then change the site title

rearranging the top menu items is in
administration>themes>menus then the visibility tab