Add this to additional.css, you must adjust padding/margin AND float etc to see changes, change the margin-right from 25px to something of your choice otherwise they now float right and are 25pixels from the right edge.
Code:
.ad_global_header {
float:{vb:stylevar right};
margin-right:25px !important;
}
#ad_global_header1 {
float:{vb:stylevar left};
padding:0px !important;
margin:0px !important;
}
#ad_global_header2 {
float:{vb:stylevar left};
padding:0px !important;
margin:0px !important;
}
Also, #ad_global_header1 is on the left close to your logo, these are inline so #ad_global_header2 is to the right of it, if one ad location does not exist it will still be on the left side. If one of them is floating on the left instead of right then change {vb:stylevar left} to {vb:stylevar right}