Thanks to cybertech and colddy. I think the message didn't appear anymore in my pc as well.
Here's my scan report. Does it look ok?
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AVG Anti-Spyware - Scan Report
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+ Created at: 12:53:28 AM 12/26/2006
+ Scan result:
C:\WINDOWS\system32\mssnmp16.dll -> Adware.Agent : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP30\A0003408.exe -> Downloader.Agent.awi : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP30\A0003437.exe -> Downloader.Agent.awi : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP30\A0003447.exe -> Downloader.Agent.awi : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP30\A0003460.exe -> Downloader.Agent.awi : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP31\A0003476.exe -> Downloader.Agent.awi : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP35\A0003648.exe -> Downloader.Agent.awi : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP32\A0003546.exe -> Downloader.Delf.asz : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP32\A0003558.exe -> Downloader.Delf.asz : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP32\A0003572.exe -> Downloader.Delf.asz : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP34\A0003601.exe -> Downloader.Delf.asz : Cleaned with backup (quarantined).
C:\WINDOWS\~tmp5940.exe -> Downloader.Small : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP29\A0003381.exe -> Hijacker.Delf.fb : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Cookies\chung^_^@atdmt[1].txt -> TrackingCookie.Atdmt : Cleaned.
C:\Program Files\Common Files\rundll32.exe -> Trojan.Agent.o : Cleaned with backup (quarantined).
C:\B00T.EXE -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\1410820152821 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\1439920572879 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\2450635004901 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\2883041185766 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\3221146016442 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\3262246606524 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Local Settings\Temp\4081583816 -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\System Volume Information\_restore{66DC337C-5FF2-47F2-93BC-65449CDF82A6}\RP37\A0003732.exe -> Trojan.QQRob.ec : Cleaned with backup (quarantined).
C:\Documents and Settings\Chung^_^\Templates\ldup.exe -> Trojan.ShipUp.a : Cleaned with backup (quarantined).
C:\WINDOWS\infrom.dat -> Trojan.ShipUp.a : Cleaned with backup (quarantined).
C:\WINDOWS\ldup.exe -> Trojan.ShipUp.a : Cleaned with backup (quarantined).
C:\WINDOWS\system32\ccPrxy.exe -> Trojan.ShipUp.a : Cleaned with backup (quarantined).
::Report end