Here are the Promotional Codes for all of the Porygon Events that are going on around the globe. All of the Porygon event will be running until September 27, 2012.
Porygon Pokemon Codes
North America and Australia: IGNPORYGON
Eurpean (English Games): PORYEUROGAMERNET
Spanish Games: PORYEUROGAMERES
French Games: PORYEUROGAMERFR
Porygon-Z C-Gear Skin Code
All Regions: PORYZCGEAR2012
Porygon2 Pokemon Doll
There is no code for this in any region.
If you need to know how to do the event then go here. There's some tutorials that I wrote and some common questions and answers about PGL promotions.
This is an animated dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the 'x' icon.