Help Changing header ad code.

[SPEEDKILLZ]

Ok so i am trying to get an ad below the welcome box. When i enter the ad in header2 it looks like 1st image.
Then when i add this 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;
}

to additional.css it looks like 2nd image. How can i move it down and left and right?

Thanks