Environment : IIS on XP pro
Language : ASP.Net

I have several included files used in the ASP page which was working until
few days back.

Now for the reason which I don't know the Include files doesn't get executed

I've pasted the portion of the code below. I tried various combinations
but I couldn't succeed.

<body MS_POSITIONING="GridLayout" class="clsBody">
<table class="clsTopTable" cellspacing="0" cellpadding="0">
<tr height="80">
<td> <!-- #include file="Header.inc" --></td>
<tr height="1">
<td> <!-- #include virtual="/HRLne.inc" --> </td>

It seems that IIS does not execute any of the server side scripts.
Plain HTML pages get displayed properly.

Any Idea?