This is Paul, Trish's husband. You have given very little information--and different companies have different names for malware. However I assume you are discussing a common virus which symantec refers to as "Trojan.Byteverify". Please see this page for information/instructions:
Broadly, you will need to disable system restore (assuming you're running XP),
Update your virus definitions.
Boot your machine in safe mode (by pressing F8 repeatedly upon reboot), and then
Run a full system scan. Then reboot your system in normal mode.
After that, go to the Windows Update site and get all the latest stuff, which includes a new java virtual machine which fixes the original vulnerability.
Make sure you have good antivirus software. Norton antivirus and McAfee are known to be quality tools (there are others also).