Quoted from BorgDog:not sure it's necessarily possible to do that. according to the manual in the Option menu if you set Specil Credit to 1 it awards specials instead of extra ball, reading further you can also set Specil Overrd to 1 and then additional specials will award points instead of credits. I don't see any way to set the first special to points however.
manual can be found on their website, http://www.ni-wumpf.com/System1CPU.html but depending on what firmware version you have it may not have all the options of the current manual posted.
Axl was asking on my behalf.
I just got info that the Dragon machine I saw ina stream where extra balls where disabled, (hitting the extra ball targets did awrd points not extra ball) they have a Janine board. This one currently has a Ni-Wumpff. I would think they do exact the same thing, but that might not be the case?
The special award is no that critical, but really need to turn off extra balls.