"Best" free antivirus and free firewall program?

I have McAfee now, and subscription is running out. I don't mind paying for these programs but if there's free ones out there that will give me just as good protection, I don't want to waste my money. Are the free firewall and antivirus just as good as payed ones and if so which would you... show more I have McAfee now, and subscription is running out.

I don't mind paying for these programs but if there's free ones out there that will give me just as good protection, I don't want to waste my money.

Are the free firewall and antivirus just as good as payed ones and if so which would you recommentd?

I'm thinking the saying "you get what you pay for", meaning you have to pay for something of quality.

I may be wrong.

Please help me decide.

I have Windows XP and not even thinking of converting to Vista.
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