Cannot Authenticate Software Source

Hey,
I want to download the ubuntu rescue remix into my own filesystem, so I followed the directions listed at at this site /node/466 . However, when I went to authenticate the sources, I got the following:
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv-keys BDFD6D77
gpg: requesting key BDFD6D77 from hkp server keyserver.ubuntu.com
gpg: key BDFD6D77: "Launchpad PPA for Andrew Zajac" not changed
gpg: Total number processed: 1
gpg: unchanged: 1

And I cannot install any of the packages that are required for the metapackage, nor the individual packages, because the software source is not verified. Any help please?
Thanks