Thank you N-S, I had, in fact, noticed the directions, but had managed to copy the wrong tlk file. Having now copied the Dialog.tlk over to the nwnprc/tlk folder of my Tortoise it all went smoothly from there on. Thanks to you and XWarren for helping me out here.
Now I can take a look at some of the scripts and such and get more of a feel for the PRC. I have, at the moment, nothing specific I will try to implement, but maybe in browsing I will come up with an idea for something to implement, if only as an experiment.
Cheers,
Yllidor