Need help with FFmpeg

[howman]

I am trying to setup ffmpeg-php for php 5.3.1 on windows iis 7.5 I have had no luck so far

downloaded
ffmpeg-php-win32-all
files in side
avcodec-51.dll
avformat-51.dll
avutil-49.dll
php_ffmpeg.dll
pthreadGC2.dll

So i put php_ffmpeg.dll in the php ext dir put extension=php_ffmpeg.dll in the .ini
The other 4 files in win system32 folder

Check my php.info file and its not there

Can someone please help me