How do you make NGPC homebrew games ?

I know, vague question, but I don't have a clue on where to begin.

Anyone point me in the right direction ?

This Guy seems to have the right perspective...and some experience.

He also has some links that may be helpful.
http://www.neobitz.com/ngpc/ --Last updated in '03
http://www.ahchay.co.uk/html/buildproject.php?devdir=ngpcdev --Last updated ??
http://www.geocities.com/rtb7/ --Useful e-mails at the bottom. Looks like a bunch of MUGEN stuff.
http://www.softnfuzzy.freeserve.co.uk/news/ --Hard to navigate. No sight of his promised homebrew games.

Does any of that help? At least you got some contacts.