hope you guys can help...

Hello I have found a picture that I I owuld like to have in a higher format. I'm wanting to have this picture transferd to a 40x60 canvas but unfortunatley i have no way of downloading a higer resolution pic. I have no problem if i need to purchase the picture etc.... please help!! http://twilite.org/gallery/davematthews?page=31

Picture number 276.

Any ideas ??

Thanks so much-

I have included an attachment to show the picture as well-