That's a bit tougher. There are two scripts that the dialog refers to: k_punk_bastrom and k_punk_bastromn. Unfortunately, those are both compiled, so I don't know what they're supposed to do.
The way I see it, there's two options. First, see if some kind soul on here will help translate the pcode file into something easier to understand.
Second, try and guess what that code is doing and make a whole new script to override it.
I'd prefer to know what it was supposed to do, but I can't make heads or tails of this pcode stuff. So I'll see if I can gain a clue based on the dialogs. And keep a close watch on this spot just in case someone wants to earn a couple ls points. :D
[edit]
Actually, I've been thinking about this, and I really would like to know how to read this stuff, since I can think of a few other scripts that I want to mod in the near future. I've read the tutorial by Torlak (
http://www.torlack.com/index.html?topics=nwndata_ncs) ) but it didn't really help much. Any suggestions?