edit /etc/apt/sources.list needs to be edited. But don't do it the hard way. Find the correct information on www.google.com first.
I went to Google, entered KDE and Debian and the first link was http://kde.debian.net/ Suggest you do this for any programs you need to install. And if you like to live dangerously, edit sources.list so that deb http://ftp.uk.debian.org/debian stable main contrib non-free is commented out and the active line is deb http://ftp.uk.debian.org/debian sid main contrib non-free Obviously the UK mirrors may not be appropriate but you know what I mean. Don't be bitter. Debian is easy to run but if you want to tinker with it, you have to spend a fair amount of time on www.Google.com and http://groups.google.com HTH, Patrick
