Securityrisk.Downldr Virus please HELP!

Thanks very much for your reply, I have seven virus`s called securityrisk.downloadldr,norton antivirus cant get rid of it,and its not in the directory. i have download a scan report from HIJACKYTHIS.
THANKS AGAIN FOR YOUR HELP NICKY X



Logfile of HijackThis v1.98.0
Scan saved at 10:06:24, on 09/07/2004
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\gearsec.exe
C:\WINDOWS\system32\drivers\KodakCCS.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Norton AntiVirus\AdvTools\NPROTECT.EXE
C:\WINDOWS\System32\ScsiAccess.EXE
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\PROGRA~1\Ontrack\SYSTEM~1\MXTask.exe
C:\Program Files\Norton AntiVirus\SAVScan.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\P2P Networking\P2P Networking.exe
C:\Program Files\Common files\updmgr\updmgr.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Kodak\Kodak EasyShare software\bin\EasyShare.exe
C:\Program Files\Common Files\Microsoft Shared\Works Shared\wkcalrem.exe
C:\Program Files\Symantec\LiveUpdate\ALUNOTIFY.EXE
C:\Program Files\Win Ace\WinAce.exe
C:\Documents and Settings\Administrator\Local Settings\Temp\HijackThis.exe
C:\Program Files\Messenger\msmsgs.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://default-homepage-network.com/start.cgi?new-hklm
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.seekseek.com/quicksearch.asp?keyphrase=
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://search.yahoo.com/search?p=%s
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.yahoo.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R3 - URLSearchHook: (no name) - _{707E6F76-9FFB-4920-A976-EA101271BC25} - (no file)
R3 - URLSearchHook: URLSearch Class - {965A592F-8EFA-4250-8630-7960230792F1} - C:\WINDOWS\System32\cdsm32.dll
R3 - URLSearchHook: (no name) - _{707E6F76-9FFB-4920-A976-EA101271BC25 - (no file)
O2 - BHO: NavErrRedir Class - {00D6A7E7-4A97-456f-848A-3B75BF7554D7} - (no file)
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [P2P Networking] C:\WINDOWS\System32\P2P Networking\P2P Networking.exe /AUTOSTART
O4 - HKLM\..\Run: [WorksFUD] C:\Program Files\Microsoft Works\wkfud.exe
O4 - HKLM\..\Run: [updmgr] C:\Program Files\Common files\updmgr\updmgr.exe
O4 - HKLM\..\Run: [stcinstaller] c:\installer\id53.exe
O4 - HKLM\..\Run: [Microsoft Works Portfolio] C:\Program Files\Microsoft Works\WksSb.exe /AllUsers
O4 - HKLM\..\Run: [fash] C:\WINDOWS\fash.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [aqadcup] C:\WINDOWS\aqadcup.exe
O4 - HKLM\..\Run: [Advanced Tools Check] C:\PROGRA~1\NORTON~1\AdvTools\ADVCHK.EXE
O4 - HKCU\..\Run: [Microsoft Works Update Detection] C:\Program Files\Microsoft Works\WkDetect.exe
O4 - Global Startup: Kodak EasyShare software.lnk = C:\Program Files\Kodak\Kodak EasyShare software\bin\EasyShare.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Microsoft Works Calendar Reminders.lnk = ?
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O16 - DPF: {1D6711C8-7154-40BB-8380-3DEA45B69CBF} -
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yinst20040510.cab
O16 - DPF: {4C39376E-FA9D-4349-BACC-D305C1750EF3} (EPUImageControl Class) - http://tools.ebayimg.com/eps/wl/activex/EPUWALControl_v1-0-3-9.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O16 - DPF: {E855A2D4-987E-4F3B-A51C-64D10A7E2479} - http://tools.ebayimg.com/eps/activex/EPSControl_v1-0-3-0.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/vso/en-us/tools/mcfscan/2,0,0,4372/mcfscan.cab
O16 - DPF: {EF99BD32-C1FB-11D2-892F-0090271D4F88} - http://us.dl1.yimg.com/download.companion.yahoo.com/dl/toolbar/yiebio5_3_16_0.cab
O16 - DPF: {F57D17AE-CE37-4BC8-B232-EA57747BE5E7} - http://66.230.146.53/EPlugin_GB.cab