i was installing a program when 1607:unable to install installshield scripting runtime error popped up. so i searched online for help and did everything everyone suggested except that my Msiexec.exe isn't there. so i dl Msiexec.exe and try to install it, but it says it's not a valid win32 program. i also tried all the other window updates, but again i'm not able to install them this time b/c it says "access denied" i really need help with this problem and any help given would be greatly aprreciated.

don't know if this will help but this is a logfile of hijackthis

Logfile of HijackThis v1.99.1
Scan saved at 6:19:02 PM, on 8/21/2006
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\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\WINDOWS\system32\tcpsvcs.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Digital Media Reader\shwiconem.exe
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\WINDOWS\system32\igfxtray.exe
C:\Program Files\Java\jre1.5.0_07\bin\jusched.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\AIM\aim.exe
C:\Program Files\802.11 Wireless LAN\WLAN Cardbus\RtlWake.exe
C:\Documents and Settings\Owner\Desktop\HijackThis.exe
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.emachines.com
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_07\bin\ssv.dll
O4 - HKLM\..\Run: [SunKistEM] C:\Program Files\Digital Media Reader\shwiconem.exe
O4 - HKLM\..\Run: [winupdate] C:\Program Files\winupdate\winupdate.exe /auto
O4 - HKLM\..\Run: [winupdates] C:\Program Files\winupdates\winupdates.exe /auto
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [BrowserUpdateSched] C:\WINDOWS\system32\twinssap.exe FI002
O4 - HKLM\..\Run: [Network] C:\Program Files\Network\network.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_07\bin\jusched.exe
O4 - HKLM\..\Run: [DeadAIM] rundll32.exe "C:\Program Files\AIM\\DeadAIM.ocm",ExportedCheckODLs
O4 - HKLM\..\Run: [X0rZQV] C:\WINDOWS\imdmcfl.exe
O4 - HKLM\..\Run: [UserFaultCheck] %systemroot%\system32\dumprep 0 -u
O4 - HKLM\..\Run: [Zone Labs Client] C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [PWRISOVM.EXE] C:\Program Files\PowerISO\PWRISOVM.EXE
O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM\aim.exe -cnetwait.odl
O4 - HKCU\..\Run: [BitTorrent] "C:\Program Files\BitTorrent\bittorrent.exe" --force_start_minimized
O4 - HKCU\..\Run: [Steam] "c:\program files\steam\steam.exe" -silent
O4 - HKCU\..\Run: [Free Download Manager] C:\Program Files\Free Download Manager\fdm.exe -autorun
O4 - Startup: Zeno.lnk = C:\WINDOWS\system32\twinssap.exe
O4 - Global Startup: BigFix.lnk = C:\Program Files\BigFix\BigFix.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: WLAN Cardbus.lnk = ?
O8 - Extra context menu item: Backward &Links - res://C:\Program Files\Google\googletoolbar.dll/cmbacklinks.html
O8 - Extra context menu item: Translate into English - res://C:\Program Files\Google\googletoolbar.dll/cmtrans.html
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O12 - Plugin for .avi: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin.dll
O12 - Plugin for .mp3: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin4.dll
O12 - Plugin for .MP4: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin4.dll
O12 - Plugin for .tif: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin6.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.emachines.com
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {1754A1BA-A1DF-4F10-B199-AA55AA1A120F} (InstallerBehaviorFactory Class) - https://signup.msn.com/pages/MsnInstC.cab
O16 - DPF: {35B7E48B-9D81-4C6C-9578-5FD4F620D886} (InstallShield Setup Player 2K2) - http://www.etopo.ca/downloads/setup.exe
O16 - DPF: {3A7FE611-1994-4EF1-A09F-99456752289D} - http://install.wildtangent.com/Activ...veLauncher.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by113fd.bay113.hotmail.msn.co...s/MsnPUpld.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsof...?1156026631125
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsof...?1156026619109
O16 - DPF: {C5E28B9D-0A68-4B50-94E9-E8F6B4697514} (NsvPlayX Control) - http://www.nullsoft.com/nsv/embed/nsvplayx_vp3_mp3.cab
O16 - DPF: {EE8B6D5F-FEF2-11D0-B13F-00A024798EF3} (Microsoft Search Settings Control) - http://lg.home.microsoft.com/search/...chsettings.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{985F5A1A-4593-43F0-917D-3DEB4D186BC0}: NameServer = 151.164.1.8,206.13.28.12
O17 - HKLM\System\CCS\Services\Tcpip\..\{CF81B8EE-581D-4BD1-9EA5-9B69D3EC8223}: NameServer = 172.16.0.1
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Unknown owner - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe (file missing)
O23 - Service: Local Security Authority Subsystem Service (lsass) - Unknown owner - C:\WINDOWS\scvhost.exe (file missing)
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - c:\Program Files\Intel\NCS\Sync\NetSvc.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe