How to: Use a custom dictionary.
Solution:
Click the 'Spelling' tab in the 'Options' dialog box, and select a custom dictionary.
1) Select the 'Tools' menu and select 'Options...'. (The Options dialog box appears.)
2) Click the 'Spelling' tab.
3) Click 'Custom Dictionaries...'. (The Custom Dictionaries dialog box appears.)
4) Select the dictionary check box in the 'Custom Dictionaries' list box.
5) Click 'OK'. (The Options dialog box reappears.)
6) Click 'OK'.