updating to 4-1

Please excuse me if this has been asked before. I did look at some topics but they were far too advanced for me.

I have windows XP with AVG anti virus, Spy bot s&d and Comodo free Firewall pro installed. (version I keep getting a pop up telling me that version 4-1 is available. when I visit the link it only downloads what I already have. Must I uninstall the older 3.0 version and then install the new 4.1 Any help please. If I decide to just stay with 3.0 how do I get rid of the constant pop up reminder.

Yes you must uninstall.

Miscellaneous / Settings / Check for updates.