i need help installing and configuring PHP APC i have downloaded from http://downloads.php.net/pierre/ in my PHP info, i see
Compiler       MSVC9 (Visual C++ 2008) 
Architecture   x86
so i downloaded php_apc-5.3-nts-svn20100226-vc9-x86.zip. then to install, i tried adding
[PHP_APC]
extension=php_apc.dll
to php.ini. restarting Apache fails. trying to execute php in cmd results in an error saying php5.dll is missing. but i doubt so. removing the 2 lines from php.ini fixes the error. how can i install apc then?