Alignment issues with FF vs. IE7 on pc

Hi,
Couple of things. You can check out this site.
In FF the main box is moved up a little, but the text is lined up perfectly. In IE7 the box is lined up perfectly, but the text is jogged down a little. Any suggestions?

Another thing, which I have no idea about, is how to make the browser window not have to scroll to show the whole image. In both FF and IE it lets you scroll to see the whole bg. I would like to have it so depending on the size of the browser the bg fills it. But I don’t like how you can scroll and see where the image stops. Is this an easy fix? is there a fix?

Thanks