KLite Codec Pack (Corporate) 5.7.0 NiCkkkDoN

Another very good codec pack is "Ace media codec pack"
I think they are not being as updated as this 1 though, but worked fine for myXP when I had that.
Pay attention if u have a 32 bit or 64bit os and get a pack accordingly
Changelog:
* Updated Media Player Classic Home Cinema to version 1.3.1595.0
* Changed default video renderer in MPCHC on Vista/7 to "EVR Sync"
* Removed MPCHC 1.2.1008.0
* Changed default H.264 decoder from ffdshow (libavcodec) to ffdshow (ffmpegmt)
* This gives better performance on computers with multiple CPU cores
* Updated Gabest MP4 splitter to version 1.3.1572.0
* Updated AC3ACM to version 1.5
* Updated Codec Tweak Tool to version 4.2.0
* Updated Win7DSFilterTweaker to version 2.8
* Minor changes
Version 5.7.0 Corporate 12.5 MB February 3rd 2010
MD5: 5ea57f719293efb9b78acc978f4e37f1

http://hotfile.com/dl/30719599/86667cc/K-Lite.Codec.Pack.Corporate.exe.html