Okay, so I missed a step in this. Try this instead:
CODE
<?
$time = date("F d, Y h:i A", strtotime("-3 hours"));
$mttime = date("F d, Y h:i A", strtotime("<$MTEntryDate format="%B %d, %Y %I:%M %p"$>"));
if ($time > $mttime)
{
?>
I believe that is going to be more likely to work because it puts both of them in date format - the original was just giving me a unix timestamp so the comparison wasn't helpful.
Kristine