New firewall, help!

I have no idea which section I should put this topic but if I now misplaced it so can

Any administrator or moderator move this to the right section. I've been trying to get

my computer clean from viruses and I downloaded some virus protections that people on

this forum suggested and most of them have not found anything, I posted a thread on

this forum regarding this but it took more than a week before I got a response back.

I have read a lot of viruses that will be dangerous to my computer and I do not know if

I'm paranoid, but a close friend who I played with daily online decided to go against me

and threatened me with inserting a keylogger on my computer and a RAT file (no idea what

that is) and he told me that he would be able to control my computer and see everything I do

on it, and all the information I have in my hard drive will be released everywhere and that

is precisely why I have been very worried about what will happen. I have not noticed anything

Yet, but you can not be on the safe side, but I have to get an answer from a knowledgeable so I know if he implanted something or not.

I read a little on various threads on this forum and they talked very much that you could

change the firewall on your computer to get a stronger defense against viruses such as these

but I stood clear that I would not download a new firewall if I already have one on my

computer and as good as I know I have a firewall with Windows and I have tried to get

an answer how to remove this firewall and then replace it with a new one but have not

found some good information about this and I have been very skeptical to do so I decided

to ask you guys exactly how to doing this when changing my firewall.

Kind regards, Phifen.