hi, thanks for the reply
after typing in aforementioned command, here's what shell window displays:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
xandros:/home/erdos/software/synaptic-0.56.1# apt-get update
Hit
http://xnv3.xandros.com xandros3.0-xn/main Packages
Ign
http://xnv3.xandros.com xandros3.0-xn/main Release
Hit
http://xnv3.xandros.com xandros3.0-xn/contrib Packages
Ign
http://xnv3.xandros.com xandros3.0-xn/contrib Release
Hit
http://xnv3.xandros.com xandros3.0-xn/non-free Packages
Ign
http://xnv3.xandros.com xandros3.0-xn/non-free Release
Reading Package Lists... Done
xandros:/home/erdos/software/synaptic-0.56.1# apt-get install synaptic
Reading Package Lists... Done
Building Dependency Tree... Done
Package synaptic is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package synaptic has no installation candidate
xandros:/home/erdos/software/synaptic-0.56.1#