Have you installed a good anti-virus software to protect your computer from all the virus like trojan horses, rootkits, malware, worms and spyware?

Step 1
If you computer still has not installed any anti-virus software or you installed some free software that you downloaded from web, I don't think your computer has good and enough protection to prevent all the virus attacks nowadays.

Please keep in mind that free software has a lot of drawbacks and tend not to protect your computer well. No matter you have broadband or dial-up connection; it's best to have anti-virus software installed to protect your computers.

Step 2 If you have never purchased any anti-virus software before, you should consider buying it from known vendors like Trend Micro, McAfee, and Norton.

Anti-virus software are not that expensive, most of them give you rebate back for first time buyers or continue users. It's just like almost free for using their software.

Step 3 Here are the items that you should look for:

-Pricing ($29 - $59)
-Scanning Effectiveness
-Ease Of Use
-System Efficiency (Speed, non-intrusive)
-Virus Database Update Frequency
-Compatibility (Supported Operating Systems)

(Yes/No?)
-Threat Removal
-Anti-Spyware
-Intrusion Protection
-Registry Cleaner
-Firewall

Step 4 Here are some tips to protect your computer:

- Do not download or install any unknown software, they might contain virus and spyware in it.

- Do not go to any unknown website or pop-up website.

- Close the browser and delete your browsing history more often once you have visited secured websites like online banking and etc.. (Go to Tools -> Internet Options)