well, what i gave you it wasn't the default sources.list for debian etch, after a little googling i found this
Code:
deb http://ftp.debian.org/debian/ etch main
deb-src http://ftp.debian.org/debian/ etch main
deb http://security.debian.org/ etch/updates main contrib
deb-src http://security.debian.org/ etch/updates main contrib
deb http://ftp.de.debian.org/debian/ etch main contrib non-free
deb http://security.debian.org/ etch/updates main contrib non-free
replace everything in your sources.list with the above, run apt-get update and it should work...
also, it's really odd that you did not have the default sources.list from the beginning.
also, about plesk: for 2 EUR how many domains can you host?
advice: before installing ispcp on a production server you should test it on a virtual/test machine so you can learn the install process a little
![Wink Wink](images/smilies/wink.gif)
.
give it one more try with the sources.list i posted above and i'm pretty sure that you'll manage to install ispcp.
good luck.