php works, but...

Hi, I've installed apache 1.3.22 and php 4.0.6 on Windows 98. When I start http://localhost/test.php (<?php phpinfo() ?>) everything works fine. But if I start an index.htm the start-site will be displayed but I can't open any link on that page. If I try to open anyway and I'm offline, my computer want to connect to the internet. All links at that page are stored in a subdirectory of localhost. What I wonder is, that frames out of index.htm are also stored in the subdirectory. How can I get to my links - Any suggestions?