Cheers for the welcome Nentindo
Must admit I'm completely overwhelmed by the amount of information that's been compiled here, and by the Wii Hackers community in general. Looks like a fantastic effort.
I'll have a steep learning curve ahead of me though I already know XML and Photoshop, and I've dabbled in creating sprites before. I just need to knuckle down and learn to use Reggie whilst not being tempted by the hundreds of NSMB levels posted online