I can't connect php with apache.

Hi all, I have been trying to install PHP4.0 to Apache1.3 on Win2K platform. I followed the instruction carefully, and all of applications, PHP4.0, Apache1.3, MySQL are installed correctly, I think. However when I put the URI into the browser, http://localhost/test.php, I got message "The page cannot be found". I checked error log said "[Mon Apr 02 03:02:03 2001] [error] [client 127.0.0.1] Invalid URI in request GET /test.php HTTP/1.1" I changed every elements related with this error message. And I found out one thing that if I changed name from test.php to test php3, it seems ok. It didn't generate error message. But it is still not be shown in browser, it show brank page. But when I push source bottum, it is shown collect source code....... I don't know what I should do next. Is there someone who can explain this situation? Please. Thank you. kukai