Use photobucket, its easier and will resize as needed.

I concur photobucket com only takes 30 secs to sign up. all my photos there are 2 million bytes, but when I upload pic, I simply copy the html code, which they provide and just post it right in your message. It will look like garbled at first, but you can preview your message before you hit submit. From that preview screen, pic will then be there, unlike the garbled code you had before you hit the preview button.