Does anyone know how to rid a hard drive of the W32.Welnia (spelling??).worm virus? It hit my system at home two days ago. I tried reformating twice but it appears to lay resident on the drive in the DLLHOST.exe system32 file and stays onboard despite a reformatting. I will not use my system until it is gone. I use Norton Antivirus to protect my puter but Norton doesn't seem to be able to do repairs.

Robert N Pruden