First of all, download this add-on: https://addons.mozilla.org/en-US/firefox/addon/add-to-search-bar/ After Firefox restarts, go to http://www.lib.uchicago.edu/efts/Woodhouse/ Place the cursor in the field where you can type a query and then right click it and choose "Add To Search Bar". You should now be able to see it in your list of search engines. Another add-on worth having is this one: https://addons.mozilla.org/en-US/firefox/addon/context-search/ It allows you to highlight a word or phrase in a web page and then right click it and choose to search with any search engine you have installed including the English-Greek dictionary you're about to add. See screenshot for an example.

Thanks. That works well.

You're welcome. Could you click the "Solved it" button to take you post out of the loop please? Thanks.