Vista Codec Package 4.6.6 is available here

With Vista Codec Package installed, you won't need to install any other codec or filter. Many user suggested default settings are implemented. It does not contain a media player. Besides, if you want to set videos of any format as your Vista desktop background, this is one will be helpful. For more, visit: http://www.vista123.net/content/set-videos-any-format-your-vista-desktop-background  

It does not associates filetypes. With this package installed you will be able to use any media player (limited only by the players capabilities) to play DVD's, movies and video clips of any format. Streaming video (real and quicktime) is supported in web browsers. Visit the homepage to get a 64bitAddon which enables xvid, divx and DVD playback in Vista's MediaCenter.

Vista Codec Package has the following other editions available: Vista Codec Package x64 Components.

Latest Changes:

* Add shortcuts for MP4 splitter choice
* Set Haali as the default 32bit MP4 splitter
* Upgrades are disabled - clean install required
* Update ffdshow to tryouts rev 1960
* Fix issues with single core systems
* Minor improvements

Download:
Vista Codec Package 4.6.6 (link 1)
Vista Codec Package 4.6.6 (link 2)

www.vista123.net , tweak and customize your Vista easily.