Bot Worms In Horses Eye Condition My Computer Has A Very Bad Virus Can You Guys Help Me Out Here?

My computer has a very bad virus can you guys help me out here? - bot worms in horses eye condition

Hello guys. My Norton 360 v2.0 liscense was completed almost a week there and I learned very little left idle, while all viruses are bad there. I did not spend much money on any other security applications, and when I searched on Google "free internet secruity" I have tons of things to maybe 50% of applications are viruses. S "Please help me, I am actually very anxious and I do not mind that there are some applications for free (I spend only $ 20 if) your claim, you can please help me to solve this major problem?

That's what I'm looking for:
Antiviryus --
Something that blocks viruses / spyware, trojans, worms, bots and rootkits, as well as a real-time protection and has a good real-time protection.

Firewall --
Blocks threats of a two-way firewall also very strong and my computer invisible to hackers to be free from the evil one trying to hack.

AntiSpyware --
Protection from spyware and all the bad things malware and also a good real-time protection.

Optimized PC --
Find and Fixsen problems caused my computer is slow and also cleans and Fixsen my Windows registry and also removes Internet clutter such as cookies and files termporary.

And I want to protect against light is not difficult because I games like Halo and disadvantages can attack this team at times.

My computer specifications --

Processor speed 1.80 GHz
2 GB of RAM
500 GB hard drive
Windows XP Professional Edition
Firefox as my primary browser

"Thanks for the replies guys, I really heard to ensure now conficker worm and also see my team, sometimes so slow that you can get this garbage, and my computer slow speed again:) want.