[Tiger]

http://maskcanada.org/skimmer/ Very professional looking skimmer...

http://saltaquarium.about.com/cs/skimmersdiy/

http://www.hawkfish.org/snailman/snailmandiy.htm

http://www.ozreef.org/diy/protein_skimmer.html

Hope this helps... ( i like the first one )

Tyson