You can go to Williamsbrewing, they have the proper equipment to convert your regular regulator to a paintball tank regulator. in fact they sell paintball tank regulators pre-assembled.
BREWER'S EDGE® PAINTBALL REGULATOR ADAPTER @ Williams Brewing
I need to find the reverse... lol I need to convert this to a standard CO2 tank, I want to move to a 10# instead of paintball tanks.
-DIG