Beta testers are an unruly bunch that rarely adheres to the rules. MS beta testers are the worst and it's quite evident with the premature release of the Vista Performance and Reliability Pack and Vista Compatibility and Reliability Pack that officially launch August 14. The quasi service packs are said to fix a handful of bugs reported through the Error Reporting Service and product support. Maybe I'll fire up that Vista laptop now, but downloading unauthorized software is wrong, so tell me how it is.
Make sure you have 7-zip so you can uncompress the files.