If the image is larger than what our rules restrict you to, you'll have to use an image editor and find a host on the internet to link it from. However, if the image is under 35kb in file size, I guess you could use the following XHTML / CSS to make it proper.
:
<img src="http://www.domain.com/dir/subdir/image.jpg" style="width: 400px; height: 125px;" />
And just change the widths and heights to fit the ratio you want
But it must be under 35kb!
Alcar...