It could be more than you bargained for. Well, most of us who've been around personal computers for a while have. A virus can be devastating. Reloading software on your system is an all day affair. To add insult to injury, if you have not backed up your files before the attack, you could loose sensitive or important files.
Viruses come is several forms.
A simple virus tells your computer either not to run, to run poorly, or to allow remote access to your files. There are no restrictions on what a virus can do. If you follow this simple rule, chances are good you will never get a virus. There are several ways. The most common way is accepting and running an infected email attachment.