What is the best (totally free) virus and spyware protection you can get??

I just did a trial scan, and i have some junk i need to get rid of.

An all-in-one package would be sweet!

I have an Acer Aspire One that runs Windows XP, and I would like to know if anyone knows of a really good virus protection/removal program that protects against all of the viruses and spyware and junk. I would prefer something that I can purchase in a store instaid of off the internet. Thank You!

I have Windows XP, just wondering about free virus protection. Also, is it as good as the ones you have to pay for?

My school usually lets me use their virus protection for free, but just when I get a new virus on my computer the virus protection has stopped completely.

So I know it is a virus, and I just want to find a program that will do a scan and delete it and then provide some free protection? Just quick and easy fixes please? K thanks.

Every virus protection program I try dosnt work out as good as i would like it too. So im wondering if there is any out there that can work for me.