Step 1
Create a text file with all the words you would like to use in the dictionary. The text file should have one word per line like so ...
apple
banana
grape
orange
peach
pineapple
Step 2
Run the Dictionary Build tool. Create a new dictionary.
Step 3
Load the text file into the new dictionary by using the Dictionary > Add OpenOffice Word List.
Step 4
Open the en-US.dic dictionary in the dictionary build tool. Copy everything in the Near Miss Data tab for the en-US.dic to the new dictionary's Near Miss Data tab. Also, copy the data from the Phonetic Rules tab to the new dictionary.
Step 5
Generate the phonetic code cache for the new dictionary by use the Dictionary > Generate Phonetic Cache.
You should now be able to use the new dictioanry in NetSpell to check words and generate suggestions from the new word list.
~ Paul