What is the best virus protection and removal software?
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!

Windows XP and Windows Me?

For those of you who knows computers, I know this is going to sound like a stupid question, but is there a big difference?

The reason I am asking is because I need a reinstallation CD for Windows XP but only found the reinstallation CD for WMe, and my question is, can I use the WMe reinstallation CD instead on the Windows XP laptop? It’s my mom’s Dell laptop. If I cannot, can I get a copy of it from Dell or Microsoft if I tell them the ID that is on the laptop?

I utilized some registry cleaner softwares because my mom had some viruses in her laptop, and it probably erased something it shouldn’t have, it takes 20 minutes for the browser homepage to open, so I figured it would be easiest to use the reinstall CD. I would do the "undo" feature except there are no records for me to undo.

Thanks so much in advance to everyone!

I have a friend who’s computer is so riddled with viruses that you can’t even run anti-virus. Any suggestions on any freeware out there to help?

Also is there a version of linux i could put on that is user friendly?

Do you know of any FREEEEEEE programs out there that will repair things on the computer. I’m trying new antiviruses but if that isn’t the problem then maybe something else is. What can I do?
I want a computer repair such as machanic not an anti spy. Everything that I have run so far has said that there is no spyware and no viruses. The problem must be something else. I already have the programs that are listed in the answers so far.

i Want to clean my computer because it is too slow and i also want it to have no viruses and stuff like that …