Wii Region Changer let you change your Wii’s region code freely. Custom IOS v37 rev 03 or newer is required.

Thanks to http://www.tehskeen.com for the news.

Update 13.07.2008 – 19:00
It seems the Wii Region Changer is not a “complete” product and therefor might harm or brick you Wii. PLEASE DO NOT USE IT!

The link in the original posting has been removed!