What is BitLocker?

http://live.pirillo.com - BitLocker is an add on for Windows Vista Ultimate edition that will encrypt your hard drive. This handy little tool will communicate with a chip called a TPM in order to ensure the operating system hasn't been tampered with. If everything is secure, Vista will boot up. In my opinion...and this is JUST an opinion...Microsoft should have only one version of Windows, and it should automatically come with BitLocker.