I just registered an account here. I've been a lurker on this site for a while, but decided to register when I got stuck.
The Wii Softmodding guide was a huge help! It is much more thorough and comprehensive than any other guide.
As for systems I have my 360, PS3, and Wiis are modded. Mine has been modded since the old Wiikey days. Anyways I just thought I'd stop by and say hello.