I ran my Norton Antivirus on w2k machine, and the system discovered a virus (w32.spybot.worm), Norton AV failed to delete it but only quarantined it. I want to manually delete this infected file myself, because after running the AV the system seems to be still infected, for example some words/charaters on web pages are so small that they are unreadable - which was not so before. But I'm afraid it could have a damaging effect to my system due to the directory path (c:\winnt\system32\svhost.exe) Will it be safe to delete this file?

reboot in safe mode/vga mode, scan with anti virus in safe mode, check for w32.spybot.worm using regedit search for in: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServices HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce HKEY_CURRENT_USER\Software\Microsoft\OLE check edit, c:\windows\win.ini edit with notepad,check for : run=%windir%\svchost.exe if present, delete line save and exit,