http://www.bluetongueskinks.net/

This site has a forum which is VERY active, and has a lot of different breeders in residence.

You can also checkout Andrew Seike's page. Which is: http://seikereptiles.com/

Pay special attention to his Sunset skinks!

P.S.

If you live in the states, shinglebacks can run you several grand! I too wanted one once upon a time...

Good luck!