I did as you suggested and it seems to work. Thank you. I wonder however if leave the #header img tag as it is and plug in the actual width and height in if that might not work also?
Have a look at http://www.cofchristknoxville.org to see how the image now displays.
NOW if I could only figure out how to make the image drop down 1 or 2 px so the white line at the top of the bar shows!

Thanks for your time.