Yes... read the information on Computer Viruses to find out how viruses are spread and how to avoid being infected by a virus.
Visit http://www.sophos.com/ the Sophos anti-virus site. You can find out about viruses, cures and hoaxes from here. It's very up-to-date.
Another reliable source of virus information is http://www.symantec.com/security_response/, this is Symantecs anti-virus site.
JCU staff and students may install Sophos anti-virus software on their home computers - see JCU Sophos for downloads and installation instructions.