These include a virus code that can either be destructive or simply annoying. In order to combat both, software developers have created antivirus application that is designed to detect and eradicate certain types of PC viruses, along with worms, spyware, adware and identity theft. With modern technology having turned toward PC and the web, computer viruses are more problematic than ever. While antivirus program is important, the best approach to fighting against a PC virus is knowing how to avoid one. Here are a few tips: 1) Never download an e-mail file from users that you do not know. Whether it be a document, photo or other application, simply close the e-mail without downloading it's contents. 2)When visiting URL's, carefully select reputable companies when downloading data. This may include e-books, freeware, software, photos and other software. If you are not familiar with the company or the URL, there is no way to know what you will be accessing and how damaging it may be to your machine. 3)If you choose to download either an e-mail or web file, use your antivirus software to check the information prior to opening it on your system. 4)Always keep your antivirus program updated with the latest information and upgrades from the manufacturer. When it is time to replace your application because it is outdated, don't wait. New system viruses are created often and no system is truly safe without some type of updated detection program. As mentioned earlier, a PC virus can be either damaging to your PC system or may be nothing more than an annoyance. An example of a destructive virus would be one that destroys your HDD files, prevents your system from continuing to operate or may cause you to have to reinstall the computer's configuration using the Restore CD that accompanied your purchase. An annoying virus may cause your system to operate slower than usual or may prevent certain files from working properly. In some cases, application manufacturers create programs that have ‘bugs' within the software. This is often called a virus, but should not be considered in the same manner as a typical computer virus. The reason is because a software manufacturer does not create these ‘bugs' to intentionally hinder their customers and will generally work to replace the faulty program. In addition, a program glitch will not prevent your entire system from operating or delete all of your information from the HDD. Common sense, along with an antivirus software, will go a long way in both detecting and avoiding a PC "code". Without these important elements, your system and the information on it are at risk of infection.