Thanks Balint for the reply but I want to do it using apt-get from the terminal.
If it helps, I tried doing apt-get install vlc instead of xchat and it
returns me:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
vlc : Depends: vlc-nox (= 1.1.3-1squeeze6) but it is not going to be installed
Depends: libfribidi0 (>= 0.19.2) but it is not installable
Depends: libqtcore4 (>= 4:4.6.1) but it is not installable
Depends: libqtgui4 (>= 4:4.5.3) but it is not installable
Depends: libsdl-image1.2 (>= 1.2.10) but it is not installable
Depends: libtar but it is not installable
Depends: libxcb-keysyms1 (>= 0.3.6) but it is not installable
Depends: libxcb-randr0 (>= 1.1) but it is not installable
Depends: libxcb-shm0 but it is not installable
Depends: libxcb-xv0 (>= 1.2) but it is not installable
Recommends: vlc-plugin-notify (= 1.1.3-1squeeze6) but it is not
going to be installed
Recommends: vlc-plugin-pulse (= 1.1.3-1squeeze6) but it is not
going to be installed
E: Broken packages
It looks like broken packages (so you use a unstable Debian version
or you did some hack that were not good).