Can you recommend another good antivirus and firewall other than avast and zonealarm?

I'm using avast home 4 and zonealarm free version.

Since I installed zonealarm my computer is really slow.

I have 1GB of ram with windows xp pro and it's an 2.8GHZ older computer.

Can you recommend another good free firewall and antivirus that doesn't slow down much the computer? One that uses less resources....

Can you recommend another good antivirus and firewall other than avast and zonealarm?antispam

try comodo (best free firewall)

and Avira AntiVir ( i think one of the best free av)

at www.filehippo.com

Can you recommend another good antivirus and firewall other than avast and zonealarm?avast

Norton has protected my computer wonderfully.

:)