Check out the demos they have listed at the bottom of the page including this one
http://www.regexbuddy.com/democreatetest.html
I don't have it installed on this computer but I don't think it is as simple as just putting in some text and it will say "here is how you match that". There is a learning curve but there is lots of good documentation and the program is spoken highly of in programmers circles. It will probably be much easier and less error prone than writing regex's by hand.
I see now that it is $40 which is a bit steep if you are only going to use it for this task. Maybe just make a thread asking for help with a regex? There should be lots of people familiar with them here.