WHEN I USE APACHE WITH PHP4.1.2 AS APACHE MODE ?? MY SITE RUN ARE ALL NOMARL??I WANT USE PHP4.2.1??SO I RECONFIGURE IIS WITH PHP4.2.????AS ISAPI MODE?? I HAVE ALREADY  READ INSTALL.TXT NOTE, BUT WHEN I START MY SITE HAVE ERROR
 [PHP has encountered an Access Violation at 10001364 ]
I DON'T KNOW WHAT HAPPEND AT PHP USE PHPISAPI.DLL RUN .
 MY SYSTEM IS:
   WINDOWS 2000 SERVER.
   IIS VERSION 5.0
   PHP 4.1.2 AT D:\PHP
   PHP 4.2.1 AT c:\php42
   MYSQL
 

NOTE:
   WHEN I USE IIS WITH PHP4.2.1 TIMES , I DON'T CHANGE C:\WINNT\PHP.INI CONFIG , I GUEST MABEY HAVE ERROR AT HERE
BUT I CAN'T SURE ITS , NOW  MY APACHE SERVICE ARE ALL OK ,BUT IIS CAN'T RUN .I HOPE YOU CAN TELL ME WHAT HAPPEND 
AND HOW TO UNTIE IT~,THANKS