Change from floating to fixed spot?

Hi guys!

Installed the float banner plugin and i love it!

I wanted to ask you if theres a way to get the banner “fixed” instead of floating.
I want the banner to be on a fixed width on my blog and not float when scrolling.

As you may have heard, floating banners are against google adsense terms so thats why i need a way to have the banner on a fixed spot instead.
Where in the plugin php file can i change the floating to fixed?

Thank you so much!

http://wordpress.org/plugins/float-banner/