Internet Security

I have Comodo antivirus for 5 days now. Am impressed. Thinking of downloading
Internet Security so I have firewall also. Will the install delete antivirus, or should
I do that myself first? Or should I just download firewall program? Thanks!

Go to the start menu and go to Comodo Antivirus. Then select the option to add or remove components. This will give you the option to add the module for the firewall.