Try adding the servers time as a querystring on the image source to fool the browser into reloading it:
<img src="../images/Users/1/CoLogo.jpg?<?php echo(time()); ?>" width="150" height="100" alt="Company Logo" />
OK I am now convinced that you're a genius. :)
That one goes in my bag of tricks for sure.
Thanks for all the help. Your solution worked great and I am now a happy camper.