If by this point you still haven't protected your PC, now is the time to take action before you lose important information. You can start by installing a good security suite like this one.
PC-Cillin is a complete security suite for Windows that offers ironclad protection against possible threats that may put the stability of your system in danger.
It contains tools specially prepared to block against all kinds of threats that come from the Internet, deleting forever viruses, trojans, worms, and other malicious software.
It includes a firewall, an 'anti-spyware' and security measures for email, local networks, and even an 'anti-spam' filter.
If you're looking for tools to help protect your computer, PC-Cillin is a great option to keep in mind.