The flickr link is simple... click the profile tab to access your signature editing block and copy and paste your address in where it says here in all caps and remove all the asterisks then paste your final product in your signature block. and you have yourself a flickr link
the the little image showing our cameras however is something that a forum member custom made... i can't remember who either.
hope i was able to help you with your flickr link though
40D + 70-200mm f/2.8L IS + 50mm f/1.8
Manfrotto 055CX3 + 496RC2