You can import ispell data in SQL database using "indexer" program. After that indexer, search.exe and PHP front-end can be switched to use SQL to normalize words by specifying "IspellMode db" in search.htm and indexer options. "IspellMode db" gives faster results at search time.
To import ispell files go to ISpell tab of mnoGoSearch and press Append button. In the opened dialog select type of the file
you wish to add (affix if you wish to append an affixes file or dict if you are appending a dictionary file.)
Ispell files supplied with various languages ispell packages may have different extensions, not *.aff and *.dict only. Select
All files in Open file dialog to select those files.