No, that won't be it.. Although I'd prefer images around 60k in size, I haven't actually enforced the limit during attaching.. It's a gentlemen's rule at the moment
How are you attaching it Ian? You can either upload it to your webspace and provide a link, or you can use the "attach file" link when posting your reply..
Just hit "browse" and click on the file you want, and then "submit reply" at the end. Just make sure it's jpeg and you can reduce size/resolution in any image editing program.