How to recover disk space after Vista SP1 installation

Nicola Delfino shares this very useful information on reclaiming disk space after installing Vista SP1. Vista SP1 leaves older components that it replaces on the disk just in case they might be useful, and they can suck up a lot of disk space.

They probably won't be useful. But: you can't uninstall SP1 after running this tool. Nothing is for free ;)