header image placement

Hi,

Just downloaded and installed mog theme.

I see how to add a background image to the pages, but it does not position it properly, meaning, it is in back of the menu, even when I chose to center it (which is where I’d like t) and with no repeat.

So…is there a way I can adjust the location (vertically) of the menu or add margin or padding.

Or is there away I can add the image (a logo) to the header.

Thanks

JOhn