Hi Raghu! Regarding your inability to install some applications in Ubuntu, you might need to uncomment some repositories in your sources.list file. Use the following procedure to do it.
- Open Gedit - Alt+F2| Type 'gksu gedit'. Open the '/etc/apt/sources.list' file. - You will find entries like the ones I've just shown below. *## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu * *## team, and may not be under a free licence. Please satisfy yourself as to * *## your rights to use the software. Also, please note that software in* *## universe WILL NOT receive any review or updates from the Ubuntu security * *## team.* *deb http://gb.archive.ubuntu.com/ubuntu/ intrepid universe* *deb-src http://gb.archive.ubuntu.com/ubuntu/ intrepid universe* *deb http://gb.archive.ubuntu.com/ubuntu/ intrepid-updates universe* *deb-src http://gb.archive.ubuntu.com/ubuntu/ intrepid-updates universe* - You might have these commented out. Just uncomment these files and reload your repo indices. - You may do this entirely from the command line if you are comfortable with it or entirely from the Synaptic package manager as well. - Then you can browse through Synaptic to get VLC installed but you may try 'apt-get install vlc' aswell. Regarding your project on NS2, I had downloaded the sources a long time ago (early 2008) for some work while I was in CDAC but never worked on it. As far as my understanding goes, it is a software that simulates a network. I'm afraid I unable help you any further on this front. Regards, -- Navneet Thillaisthanam

