I was recently doing some scoring to a short film and I didn't want to do repetitive calculations about how fast the tempo has to be to fit this many bars in it etc... So I made (programmed) a simple windows application to calculate the tempo for you. All you do is enter the time, bars and beats per bar and it will do the rest for you. It can even calculate the time from the tempo and bars. Anyway this probably wont help most of you but if it does I'd like to know I found it helpful if I wanted to fit so many bars in however time! It will even take decimals.