Welcome to Flyertalk leebedford

The best thing to do is to read the through the following Read This First guide:

http://www.flyertalk.com/forum/bmi-d...s-lounges.html

Then have a look specifically at this thread which will show you to search for availability:

http://www.flyertalk.com/forum/bmi-d...sterclass.html

There is a lot to read up on, but it is well worth 20 minutes of your time on the relevant parts.

Finally, if you have any specific questions about availability on flights not covered by the ANA tool (such as Swiss) then this thread is worth looking at and posting a question on:

http://www.flyertalk.com/forum/bmi-d...ilability.html

Hope that all helps.