How to open video files with various codecs and files extensions?

I'm rather new to OpenCV, and I have this simple code to play a video clip:

Code:

---

#include "stdafx.h"
#include "cv.h"
#include "highgui.h"
.
.
.
        cvNamedWindow( "Example2", CV_WINDOW_AUTOSIZE );
        CvCapture* capture = cvCreateFileCapture( argv );
        IplImage* frame;
        while(1)
        {
                frame = cvQueryFrame( capture );
                if( !frame ) break;
                cvShowImage( "Example2", frame );
                char c = cvWaitKey(33);
                if( c == 27 ) break;
        }
        cvReleaseCapture( &capture );
        cvDestroyWindow( "Example2" );

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But, it only plays SOME codecs and file extentions (such as MJPG and DivX codecs of .avi file). What should I do to be able to play other types of files. I've wasted many hours on it, and I couldn't find a way. I'll appreciate any type of help! (should I install some codecs, or use a *.dll or #include something? how?) (I can play them with media player but not with my code.)
p.s.: I need to open these filetypes: avi (DivX, Xvid, uncompressed), flv, wmv, mpg.