Manually Prepare Drive for Windows Vista BitLocker

Ever since knowing BitLocker can be used without a TPM chip (instead, with a startup USB key), I wanted to give it a try on my old Pentium M notebook. Since BitLocker requires a second partiton (of 1.5GB) that is unencrypted in order to store the encryption keys and stuff, users who didn't configure their hard drive during installation of Vista will have to do it another way.Vista Ultimate offers...