Download this "All in one codec" and install in ur computer.
http://filesharingdownloads.com/codecs/
Hope this can help u. This is the latest all in codec software.
K-Lite Codec Pack is a collection of codecs and related tools. Codec is short for Compressor-decompressor. Codecs are needed for encoding and decoding (playing) audio and video. It is designed as a user-friendly solution for playing all your movie files. You should be able to play 99% of all the movies that you download from the Internet.
Download: K-lite Mega Codec Pack 1.16 [20 mb]
Features of version 1.16:
* BSplayer [version 1.01.812]
* Media Player Classic [version 6.4.8.2]
* DivX Pro [version 5.2.1] [Decoding]
* DivX Pro [version 5.1.1] [Encoding]
* DivX MPEG-4 Low and Fast motion [version 4.1.0.3927]
* XviD [Version 1.0.2 build 2004-08-29] [Decoding]
* XviD [Version 1.0.2 build 2004-08-29] [Encoding]
* 3ivX [version D4 4.5.1] [Decoding]
* 3ivX [version D4 4.5.1] [Encoding]
* Windows Media 7 [version 7.1.0.3055]
* Windows Media 8 [version 8.0.0.371]
* Windows Media 9 [version 10.0.0.3646]
* Windows Media 9 VCM [version 9.0.1.369]
* On2 VP3 [version 3.2.5.0]
* On2 VP6 [version 6.2.0.10] [Decoding]
* On2 VP6 [version 6.2.0.10] [Encoding]
* Cyberlink DVD decoder [version 5.0.0.1130]
* Ligos Indeo XP [version 5.2820.15.58]
* Intel Indeo [version 4.51.16.2]
* Intel Indeo [version 3.24.15.03]
* Intel I.263 [version 2.55.1.16]
* huffyuv [version 2.2.0]
* MS MPEG-4 [version 4.1.0.3927]
* Ligos/Elecard/MainConcept MPEG-2 demuxers & decoders
* QuickTime codecs [version 6.5.1.17]
* QuickTime DirectShow filter
* QuickTime plugin for Internet Explorer
* QuickTime plugin for Opera/Mozilla/Netscape
* Extra QuickTime plugins
* RealMedia codecs [version 6.0.12.1053]
* RealMedia DirectShow splitter [version 1.0.0.9]
* RealMedia plugin for Internet Explorer
* RealMedia plugin for Opera/Mozilla/Netscape