Thanks - I was just confused if I was supposed to re-write the free version of gtranslate... So, now I understand that these instructions apply to WordPress as well.
I've almost completed all the steps but I am not sure about steps 4 and 5.
4. Edit /gtranslate/config.php file to add your API key and username/password need for editing translations
Where do I find my API key? Is this my FTP login info? Or my wordpress login info?
5. Modify robots.txt and add this line on the end of the file (replace yourdomain.com with your domain name)
I don't have a robots.txt file. If I create one, where do I load it - the root?