Browser Shmouser...Any Ideas?

Browser stuff again...

When I view my pages in NS (above 4.7) the pages look fine. When I go to view them in IE5 there is white space around the page as if it is not filling the entire window. I do have my pages opening in a sized browser window with the open browser window behavior. The site is not live yet, but I would be happy to provide an example if necessary. Has anyone dealt with this specific issue? Please help this is so frustrating! ; )