My site logo question?

[buffness]

How do I get my site logo www.powerbuilding.net/forums (http://www.powerbuilding.net/forums) to connect to the navabar and the top of the page rather then having space in between? Kind of have it show up like this one http://www.sculptedbyiron.com
(http://www.sculptedbyiron.com/forum/search.php?searchid=53022?)

[Zachery]

One idea would be to use a way smaller logo.
The other site is using html and sliceed images to make a sctreching effect, you can't do that with a single image.