HELP on : downloader.small.18.T

[luca.piancastel]

Guys... I am trying to delete the above trojan but it sounds hard on my pc...

my hyghjackThis log is very simple:
*********************
Logfile of HijackThis v1.99.1
Scan saved at 23.46.51, on 18/05/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\ANSYSI~1\SHARED~1\LICENS~1\Intel\lmgrd .exe
C:\WINDOWS\System32\atievxx.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\ANSYSI~1\SHARED~1\LICENS~1\Intel\ansys lmd.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\WINDOWS\System32\DRIVERS\CDANTSRV.EXE
C:\Programmi\Matlab\webserver\bin\win32\matlabserv er.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Documents and Settings\Luca\Desktop\HijackThis.exe

O4 - HKLM\..\Run: [Desktop Search] C:\WINDOWS\isrvs\desktop.exe
O4 - HKLM\..\Run: [ffis] C:\WINDOWS\isrvs\ffisearch.exe
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [WindowsUpdate] C:\Recycled\svchost.exe /s
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O15 - Trusted Zone: http://www.unicreditbanca.it
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1114030117929
O18 - Filter: text/html - {950238FB-C706-4791-8674-4D429F85897E} - C:\WINDOWS\isrvs\mfiltis.dll
O23 - Service: ANSYS FLEXlm license manager - GLOBEtrotter Software Inc. - C:\PROGRA~1\ANSYSI~1\SHARED~1\LICENS~1\Intel\lmgrd .exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: C-DillaSrv - C-Dilla Ltd - C:\WINDOWS\System32\DRIVERS\CDANTSRV.EXE
O23 - Service: MATLAB Server (matlabserver) - Unknown owner - C:\Programmi\Matlab\webserver\bin\win32\matlabserv er.exe
***************************

I already tried to fix the following:
O4 - HKLM\..\Run: [Desktop Search] C:\WINDOWS\isrvs\desktop.exe
O4 - HKLM\..\Run: [ffis] C:\WINDOWS\isrvs\ffisearch.exe
O18 - Filter: text/html - {950238FB-C706-4791-8674-4D429F85897E} - C:\WINDOWS\isrvs\mfiltis.dll

but nothing has changed... any help ????

thanks
Luca