Calculating the difference between date/time fields? My calc using Date/Time fields is [Finish Date/Time] - [Start Date/Time] -I need my result to show hours:minutes...

I was researching questions already asked and came across this one.  this wasn't helpful in anyway so I agreed with Jeff from 2 months ago, that way others who made need help with this subject would know that this article was pretty much not helpful.  

I would rather research my question first before submitting an identical (or close to identical one) in the forum rather than waste other peoples time re-answering a question that was already asked previously.

Now both of us have wasted our time on an article and replies that are not help to either one of us. 

Oh and P.S. I did find the answer I was looking for in another post, and am going to try it to see if it works for us.