Open Xandros Networks >> Click on Edit >> Set Application Sources >> Add >> and then add each of these lines in its entirety:
NOTICE: The archlug repositories are once again available.
For Xandros 3
deb http://www.archlug.org/apt/ xandros3 archlug boylinux zzupp
deb http://www.archlug.org/apt/ xandros3 xorid/kernel xorid/maintained xorid/matty xorid/submitted xorid/andrew
deb http://www.debian-multimedia.org/ stable main
deb http://www.geekconnection.org/ xandros3 main
For Xandros 4 you can use the above listed repositories plus:
deb http://dccamirror.xandros.com/dccri/ dccri-3.0 main
deb http://www.archlug.org/apt/ xandros4 archlug xorid/andrew xorid/matty
deb http://www.xandros.or.id/archive/ xxxx matty andrew
deb http://http.us.debian.org/debian/ stable main
deb http://www.geekconnection.org/ xandros4 main
It is never recommended that one leave these repositories enabled except for the Xandros supported site and the Debian unsupported site. All the rest should be disabled except when installing programs that require access to them.