This is one I have laying around -- it's a long story, but I can't exactly test this, but I think it should work for you:
# sources.list for Debian Lenny and Virtualmin GPL deb http://ftp.us.debian.org/debian/ lenny main contrib non-free deb http://security.debian.org/ lenny/updates main contrib non-free deb http://volatile.debian.org/debian-volatile lenny/volatile main deb http://software.virtualmin.com/gpl/debian/ virtualmin-lenny main deb http://software.virtualmin.com/gpl/debian/ virtualmin-universal main
This is one I have laying around -- it's a long story, but I can't exactly test this, but I think it should work for you:
# sources.list for Debian Lenny and Virtualmin GPL
deb http://ftp.us.debian.org/debian/ lenny main contrib non-free
deb http://security.debian.org/ lenny/updates main contrib non-free
deb http://volatile.debian.org/debian-volatile lenny/volatile main
deb http://software.virtualmin.com/gpl/debian/ virtualmin-lenny main
deb http://software.virtualmin.com/gpl/debian/ virtualmin-universal main