[Phplib-users] Blank pages

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I installed PHPLib 7.4 on my Windows 2003 Server Web Edition last week.  When I run the samples, I
get nothing but blank pages returned with the following HTML source:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=windows-1252"></HEAD>
<BODY></BODY></HTML>

The samples I'm running are in the <phplib>\pages folder.  index.php3 and showoff.php3

You can see the results from here:
www.michaelquinn.net/phplib/index.php3
www.michaelquinn.net/phplib/showoff.php3

Also,
www.michaelquinn.net/phplib/test.php3
which calls 
  <a href="<?php $sess->purl("index.php3")?>">Load</a> the simple page again.<br>
  <a href="<?php $sess->purl("showoff.php3")?>">Load</a> the complex example again (login as kris,
password test).<br>
  <a href="<?php $sess->purl("defauth.php3")?>">Load</a> the default auth example.<br>
  <a href="<?php $sess->purl("logout.php3") ?>">Logout</a> and delete your authentication
information.<br>

and produces the following output:

No input file specified.

I've also got the latest MySQL installed.  I'm at the end of my knowledge here.  I'm basically just
trying to get the sourceforge project "mynewsgroups" working, which relies on PHPLib.  I have
little to no experience in PHP and zero in PHPLib, but I do have decades of experience in other
languages, so I'm not totally out of my realm here.

Any help or pointers in the right direction would be greatly appreciated!

Thanks!