I was the admin for this server. They chose not to continue hosting a local debian repo. You can just replace the deb.repo line in your /etc/apt/sources.list with
deb http://ftp.us.debian.org/debian/ lenny main contrib non-free
just make sure you change lenny to etch if you're still on etch, and you may need to use archive.debian I believe etch repos will be moved over to archive soon.

good luck and remember VPSlink now sucks