Michelle - I looked at your blog and see what you are trying to do. It appears that the widest the image can be is about 200-pixels to fit in the margins of the left column the way your page is laid out. Our logo doesn't reduce down to that size and maintain any degree of readability - so I tweaked it a bit to get you this. It should fit - but if it is too wide I can trim a few more pixels off each end.
"It ain't what you don't know that gets you in trouble. It's what you know for sure that just ain't so." - Mark Twain