remove portion of string

I need a function that will return a string from a passed string value. This
is an example of the passed value:


12/10/2007 10:51:04 AM kwithrow Open Call
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This is a test for #1.
12/10/2007 10:53:10 AM kwithrow Open Call
==================================
This is #2 Test.
12/10/2007 11:45:15 AM kwithrow Open Call
==========

I need to have returned:

This is #2 Test.
12/10/2007 11:45:15 AM kwithrow Open Call


The string is never the same, but will always be seperated by =. I need the
last section of string between the last set of = and the second to the last
set of =.

TIA,

Kim


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