about virus

Giganews Newsgroups
Subject: about virus
Posted by:  q & y (q.xi…@home.nl)
Date: Fri, 27 Jun 2003

Help me please.

When I browse internet, I often get virus warning messages:
Virus name: W32/Deloder.worm
Infected file: C:\WINNT\system32\Dvldr32.exe
Virus name: BackDoor-ARG.dr
Infected file: C:\WINNT\system32\inst.exe

Neither files can be cleaned or deleted. If I select WINNT\system32
directory and run virus scanner, no virus can be found !

What is wrong and what I should do?

my virus scanner is McAfee :
version: VirusScan v4.5.1 SP1
scan engine 4.2.40
virus def. 4.0.4270

my OS is win2k.

Thank you in advance for your help!