Thanks for your reply, just to quickly answer your questions.
* I had an open connection to an SQL server at the time.
* I did see another thread about having a query window open, that did change the list of options available, but again most were greyd out and not available.
I did try accessing the SQL Prompt 5 menu from various places within SQLSMS but nothing became available.
* The trial hadn't expired, only installed it yesterday, but I can't remember the expiry date given in Help -> About
Anyway as I've said above, I have now installed a different product that has helped me get the job done.