You can try this in your additional.css template:
HTML Code:
#ad_global_header2 { float: right; margin: 50px 0 0; }
however, the placement of that really depends on where your leftside logo is. It's much larger than on your main page and the banner will only go to the right if the browser window is wide enough.
HTML Code:
#ad_global_below_navbar, , #ad_board_after_forums {
text-align: center; }