Free Antivirus from Microsoft

Did you know that Microsoft has their own antivirus? it's been a while though, so if you are the owner of genuine Microsoft windows (XP, VISTA, 7) you're eligible to download and install it in your machine for FREE..yes free! so if you're  'i want a good antivirus but i don't want to purchase' type of users (like me :P), rather than keep googling for good free antivirus out there,you might try this one..yes I'm using it right now..so what i can say is..hmm not bad. here's a screenshot of virus removal history in my computer

If you need this , you may go to your local Microsoft download centre and search for 'microsoft security essential' or you may click here