Hey.. Just found this site, and it worked for me..
< How to.
http://wii.marcansoft.com/parental.psp < The site to enter the code and get the master pin.
The other option is give it to Nintendo to reset. However, it seems you picked up a NTSC format wii versus the PAL set up in Scotland.
Brilliant, code worked for me, and I had no idea at all to get this code as I got mine off ebay!!! Thankyou!!!!!!
I had forgot my Pin code and that link helped me to remove parentaL controls
Now thanks to you i can play online