PHP SSI on IIS

Acronyms all over for this one... Ok this may be a tricky one gurus. The company that did development on our site did it with php but php as an SSI. So their code looks like this.

<%
echo "Print this line";
%>

and the file saves as whatever.htm. We're trying to migrate to a windows IIS server now and I dont want to have to rescript these pages. I've gotten as far as setting up the PHP to work as a SSI on IIS but you have to surround your PHP code like this.

<?
echo "Print this line";
?>

How would I go about setting up an IIS server to run PHP code surrounded by the <% %>.. its not a big deal, I know I could go through and just replace "<%" with "<?", its more of a.. a I just want to know what they did type of post. Thanks for the feedback

there is a setting in the ini file of php that lets you use asp tags. that might be where they got them. also i tlooks like the server was setup to parse htm files as php. this also can be setup but not recommended.

If you decide to change the tags, remember that the PHP developers strongly encourage you to write
<?php
not only
<?