Is this good enough protection for the computer?

I have

-Norton Internet Security 2007

-Spybot Search and Destory

-Ad-Adware SE

-Avast Anti Virus

is that good enough? need a fire wall anything? please tell me where to get it and stuff If I DO need it.

Is this good enough protection for the computer?anti virus protection

Norton Internet Security already has the antivirus scanner--you should uninstall Avast since it may came into conflict with Norton. You can also add A-Squared Free, SpywareBlaster and SuperAntiSpyware to your list. Norton also already has the software firewall, so you're OK there. If you also connect to the internet through a Router, you also already has a hardware firewall too. You're OK on security although if you can i would ditch Norton Security and use ZoneAlarm Security Suite instead, it's a much much better security suite. The suite has the top notch ZoneAlarm Pro firewall, Kaspersky antivirus along with ZoneLabs antispyware.

Is this good enough protection for the computer?antivirus

Norton Internet security gives you the full protection. No need to install those other craps.
looks like you have pretty well got things covered.If you are running windows you already have a firewall,just be sure it is turned on. you can check by going to control panel click on security and wala it will show you if firewall is on or off.hope this helps you