Information Week:

A free software tool that promises to strip down the Windows Vista operating system -- which even some Microsoft officials have called "bloated" -- to a minimalist state is attracting big interest on the Internet.

vLite, created by developer Dino Nuhagic, automatically removes a number of non-essential Windows Vista components in order to pare the OS's heavy footprint by half or more.

vLite allows users to preselect numerous Vista features for automatic removal prior to installing the OS on their personal computers. Among them: Windows Media Player, Windows Photo Viewer, MSN Installer, Wallpapers, SlideShow, Windows Mail and other utilities.

"It's not just about hard disk space. There is also an increase in OS responsiveness and you don't have to tolerate all kinds of things you don't use," said Nuhagic, in an e-mail to InformationWeek explaining why he launched the project.

vLite, however, isn't for the technically timid. The software warns that the changes it imposes on Vista are "permanent, so be sure in your choice." 

This looks really interesting. I'll try to check this out soon.

Related: vLite home page