[pauldodman]

Hi
It says you are online, so I hope you haven't fallen asleep at your desk.
v11 isn't any different in this respect - when you goto languages, it should not already be English, unless you have modified it.
As you can't see the topic box, I'm guessing you have missed the right box.
Under Default Languages it will say English, but the very top box on the Language page - Edit Language - that needs to be changed to English.
Then the page will change.
You will then see the other boxes Padraic mentioned.
You don't really need the Select topic box, you can just put the text, or some of the text you are looking for into Apply Filter. This is basically a posh name for search, that is your search box.
Once you've done that, you'll find text to change.
Suggest though trying Webmaster mode - you can then just alter the text on the fly.