Is there any free antivirus which works properly

[abhi123tri]

is there any free antivirus for win xp, and for win 7.....
anyone can suggest..
please...

[void]

The best thing I found is Comodo Antivirus. It protects your computer from attacks of pests from the Internet. This will prevent you from malware, spyware and viruses. You have the choice between different scanning methods. To search a specific directory, such as specific folder, or scan the entire hard disk immediately. The monitoring by Comodo Anti Virus in real time in the background. This ensures that you will be informed about threats directly. You also have the ability to create a schedule. The software then starts the set with the times you search your system.

[abhi123tri]

thanks .....Void for ur suggestion.....