pull text string from cell containing random txt data?

Hi,

i have an excel sheet with the following text located in a single cell


===
From: CashNetUSA <[email protected]>
To: [email protected]
Subject: This is a test subject
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8

Joe Smith
===

how would i create a formula to automatically pull all data in the "subject" line? In every instance, there would be the Subject: line, and then immeidately following, the Mime-Version: 1.0

I would imagine some combination of find function, mid/left function, etc.

Thanks!!