Hi,
I understand that you would like to know about the Antivirus software installed on your computer. I will surely help you with this issue.
Please go to Control Panel select ‘Programs and Features’ and then look for the Antivirus program installed on your computer.
Here is a list of Antivirus software vendors:
**http://support.microsoft.com/kb/49500**
I hope it helps. If you have any issues regarding Windows in future please let us know. We will be happy to help you.