2DA

Yeap, 2DAs are still in the game. Stands for "Two Dimensional Array", it's a text file that contains information that the game needs to handle some aspect of its functions. 2DAs are very easy to edit*, you just need a simple text editor, like Notepad that comes with Windows, change some of the contents, save the changes, putting the new file into override, and fire up the game to see the results.

Warnings

 * Make sure any tabs you use are converted to spaces instead.
 * Columns are NOT important, they're done that way to make it easier for us to read. As long as there's one space between the entries, NWN will read them just fine.
 * However, you can include spaces in some entries by encasing the label in quotes i.e.

 LABEL           STRINGREF      MODEL 746 "Some Creature" ****           c_somecreature 