Hi, Last night i tried to install Norton internet security 2009 in my Pc, but i can not install and i got a message that you have a anti-virus already on your PC. As i have already install anti-virus named as symantec endpoint protection of Norton products. Then why these products are collaborating with each other. When the both are from same brands. I need both anti-virus on my PC but unable to install. Can anyone help me out how can i install Norton internet security 2009 without uninstalling my previous anti-virus as symantec endpoint protection. Is it possible, plz let me know. Thanks David