Basically, if you have an awesome idea there will be someone to help you get it in print. If your idea is pretty much the same as everyone else's, it's a lot harder.
John and Brave Halfling are an excellent option. He took my Swords & Wizardry: WhiteBox
rules set and made them look incredible. Definitely take a look at his writer's guidelines and give it a shot!
_________________Marv / FinarvynDCC Minister of Propaganda
; Deputized 6/8/11
DCC RPG playtester 2011, C&C
since 2003, ADRP
Since 1993, OD&D
player since 1975
"The worthy GM never purposely kills players' PCs, He presents opportunities for the rash and unthinking players to do that all on their own."
-- Gary Gygax
"Don't ask me what you need to hit. Just roll the die and I will let you know!"
-- Dave Arneson