Graham
On the OPTIONS - COMPANY tab - I have a REPORT LOGO Height of .75 inches
On the OPTIONS - INVOICE tab - LOGO HEIGHT - I also have .75 inches
On the OPTIONS - OTHER tab - Margins and other Report Settings Side is .75 and Top/Bottom is .75
The LOGOS themselves are standard .jpg files. But on both logos I did fiddle with the sizing to get them right. All I did was use standard Microsoft picture manager to reduce the sizes until they fit the way I wanted them to.
I think the key here is to size the logo correctly and it should work. In other words, I made the logo fit the report instead of the other way around.
Hope this information is helpful. Best of luck in getting yours to work.