Fixed the link finally, the only real documentation on there is the CHL file format used in all Black and White games - I could document more like the map and model formats from both games if people are interested, if not it just seems like wasted effort.
There appears to be an issue with email confirmation. I keep getting this error:
B&W2 Modding could not send your confirmation mail. Please check your email address for invalid characters.
Mailer returned: Unknown error in PHP's mail() function.
It did successfully create my account, but I am unable to confirm my email.