Hi phish~ I believe that is only available in XP. I am not sure how it does it either, that is, just how secure the "clearing" really is?

The tools I have seen for earlier versions of Windows are either run from bootable media or submit a job that runs when you reboot.

I agree that bitlocker in Vista Ultimate and Enterprise will encrypt the whole drive apart from some boot information that is in a separate partition.

I still think that the answer to jockey's question is "no". As soon as you boot up the system with bitlocker you will open Windows, which means that you will open the page file in unencrypted form.