If an instant fix isn't available, they may provide written instructions or even talk you through removing the virus yourself. If your system is acting strange and you suspect a virus, you can sometimes search the software site and they can identify the virus from the symptoms and give you a fix. Limit Internet downloads unless you are sure they come from a reputable company. Some downloads, such as free screensavers, carry viruses. As with anything in modern life, it is better to be proactive, rather than reactive, and the same thing applies to computer viruses.
Prevention is always better than having to fix the problem.
Remember to keep those virus scanners running, and try to stay away from any Web sites that your mother wouldn't approve of.