In reply to the above answers:

The following 9 files are infected;

  1. Name: pav.sig
    In map: C:\WINDOWS\system32
    Infected by: Win95:Matyas
    Message after attempting to remove the virus:
    The file was not repaired.
    Cannot process “C:\WINDOWS\system32\pav.sig” file

  2. Name: imscan.dll
    In map: C:\WINDOWS\system32\ActiveScan
    Infected by: Win32:Kuang2
    Message: File was successfully repaired.

  3. Name: pav.sig
    In map: C:\WINDOWS\system32\ActiveScan
    Infected by: Win95:Matyas
    Message: The file was not repaired.
    Cannot process “C:\WINDOWS\system32\ActiveScan\pav.sig”
    file

  4. Name: WinStart001.exe
    In map: C:\Windows\System
    Infected by: Win32:Trojan-gen. {VC}
    Message: The file was not repaired.
    Cannot process “C:\Windows\System\WinStart001.exe” file

  5. Name: A0019897.exe
    In map: C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP229
    Infected by: Win32:Trojan-gen. {VC}
    Message: The file was not repaired.
    Cannot process “C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP229
    \A0019897.exe” file

  6. Name: A0020631.dll
    In map: C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP238
    Infected by: Win32:Kuang2
    Message: The file was not repaired.
    Cannot process “C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP238
    \A0020631.dll” file

  7. Name: A0020646.dll
    In map: C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP239
    Infected by: Win32:Kuang2
    Message: The file was not repaired.
    Cannot process “C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP239
    \A0020646.dll” file

  1. Name: A0020657.dll
    In map: C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP239
    Infected by: Win32:Kuang2
    Message: The file was not repaired.
    Cannot process “C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP239
    \A0020657.dll” file
  1. Name: A0020713.dll
    In map: C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP239
    Infected by: Win32:Kuang2
    Message: The file was not repaired.
    Cannot process “C:\System Volume Information
    _Restore{6F41619F-E3DD-419C-B8D4-ABC18B018CE1}\RP239
    \A0020713.dll” file

Question 1: Why can’t process Avast these infected files?

Note/Question 2: In spite of the message File Was Successfully Repaired,
every time I scan again my local drives with Avast, file
“number 2” - imscan.dll, located in map
C:\WINDOWS\system32\ActiveScan\ - stays infected by
the Win32:Kuang2 virus. How is this possible?

Note/Q. 3: So once a while I also use for a second opinion some free online
virus scanners like BitDefender Antivirus, Panda ActiveScan,
Symantec Security Virus Detection, or TrendMicro HouseCall
Antivirus. When I look to the map
C:\WINDOWS\system32\ActiveScan\ (see number 2 & 3) I think
that this map is used by the online Panda ActiveScan(ner)
software because of the same name (“ActiveScan”). Am I right?

Note/Q. 4: Does someone know what the function is of the file
WinStart001.exe which is located in map C:\Windows\System
and infected by the “Win32:Trojan-gen. {VC}” virus (see no. 4)?

Note/Q. 5: Every time I use the Avast 4 Home Edition Virus Scanner to scan
my local drives for viruses the number of infected files increases
by one. Again, how is that possible?

Note/Q. 6: Last question. What is the function of the map with the long
name “C:\System Volume Information
_Restore{6F41619F-E3DD-419C-…” (see no. 5 - 9)?