ok this is my sources.list


I am still getting errors

Code:
# Debian/Squeeze is the stable base for this installation
deb http://ftp.de.debian.org/debian stable main contrib non-free
deb http://security.debian.org stable/updates main contrib non-free

# testing/unstable/experimental contain newer versions, but
# packages from there are not being installed by default, unless
# they came from there in the first place.
deb http://ftp.de.debian.org/debian testing main contrib non-free
deb http://security.debian.org testing/updates main contrib non-free
deb http://ftp.de.debian.org/debian unstable main contrib non-free
deb http://ftp.de.debian.org/debian experimental main contrib non-free

# Debian/volatile contains quickly changing data like spam- and virusfilter data
bases
# Does not exist anymore
# deb http://volatile.debian.org/debian-volatile stable/volatile main contrib no
n-free 
deb http://ftp.de.debian.org/debian stable-updates main contrib non-free

deb http://ftp.de.debian.org/debian experimental main contrib non-free

# Debian/volatile contains quickly changing data like spam- and virusfilter data
bases
# Does not exist anymore
# deb http://volatile.debian.org/debian-volatile stable/volatile main contrib no
n-free 
deb http://ftp.de.debian.org/debian stable-updates main contrib non-free

# Knoppix repository
deb http://debian-knoppix.alioth.debian.org ./

# x2go
# deb http://x2go.obviously-nice.de/deb/ lenny main
#deb http://packages.x2go.org/debian squeeze main
#deb http://packages.x2go.org/debian wheezy main
#deb http://packages.x2go.org/debian sid main

# Debian Multimedia, contains non-free software like acrobat reader
deb http://debian-knoppix.alioth.debian.org ./

# x2go
# deb http://x2go.obviously-nice.de/deb/ lenny main
#deb http://packages.x2go.org/debian squeeze main
#deb http://packages.x2go.org/debian wheezy main
#deb http://packages.x2go.org/debian sid main

# Debian Multimedia, contains non-free software like acrobat reader
# deb http://www.deb-multimedia.org squeeze main non-free

# eviacam
# deb http://ppa.launchpad.net/cesar-crea-si/eviacam/ubuntu trusty main
# deb-src http://ppa.launchpad.net/cesar-crea-si/eviacam/ubuntu trusty main
What should it look like? and I thank you all for bothering with my dumb questions!!