Download the free English version of TextStat from Freie Universität Berlin:
Unzip the software. Double click on TextSTAT.exe to launch the application. Click the “Run” button. Create a New Corpus. Add a Microsoft Word file for your book. Click the “Word Forms” tab. Select “sort alphabetically.” Click the “Frequency List” button. Export “Frequency list > CSV file.” Name and save the file.
Highlight and copy a word that you want to check. Paste the word into the “Define filter” field of the TextSTAT software, under the “Word forms” tab, and click the “Frequency list” button. Copy/paste may not work with Windows 7, in which case you will scroll down and locate the word in the TextSTAT list. The result is the word listed in context for each use. Double click on each line to read more. Click on the link to the book file to open it and search for the misspelled word [<Ctrl> f]. Make corrections in the file as needed.