Files in chest but are not viruses

Can anyone please help me with this problem , In the virus chest I have 3 files which I don’t think are viruses . Kernel32.dll , winsock.dll and wsock32.dll these are all in the C:\WINDOWS\system32 . Ive tried deleting these but when I reboot they come back , any suggestions what they are and how to fix the problem. I have winXP with service pack 2.

Avast! make automatically a copy of this ssystem files in the Chest. Is normal. :slight_smile: See the Help guide and search for “Chest files”

Thanks no need to worry then . Many thanks.