Logfile of HijackThis v1.99.1
Scan saved at 1:44:46 AM, on 01/08/2006
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:\Program Files\Netropa\Multimedia Keyboard\nhksrv.exe
C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\IntCodec\isamonitor.exe
C:\Program Files\Netropa\Multimedia Keyboard\MMKeybd.exe
C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\IntCodec\isamini.exe
C:\Program Files\Netropa\Multimedia Keyboard\TrayMon.exe
C:\Program Files\Netropa\Onscreen Display\OSD.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\DOCUME~1\BRIANP~1\LOCALS~1\Temp\Temporary Directory 1 for hijackthis[1].zip\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.download.com/
O2 - BHO: (no name) - {5753791b-f607-48ca-814e-91c14d081f9e} - C:\Program Files\IntCodec\isaddon.dll
O3 - Toolbar: Protection Bar - {d1ac752e-883f-4ed8-8828-b618c3a72152} - C:\Program Files\IntCodec\iesplugin.dll
O4 - HKLM\..\Run: [MULTIMEDIA KEYBOARD] "C:\Program Files\Netropa\Multimedia Keyboard\MMKeybd.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [SpywareBot] C:\Program Files\SpywareBot\SpywareBot.exe -boot
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
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
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: WRNotifier - WRLogonNTF.dll (file missing)
O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.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: AVG E-mail Scanner (AVGEMS) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: Netropa NHK Server (nhksrv) - Unknown owner - C:\Program Files\Netropa\Multimedia Keyboard\nhksrv.exe

Hello,

It's better to print out the next instructions or save them in notepad, because you also have to work in safe mode without networking support, so this page wouldn't be available then.
It is also important you don't miss a step and perform everything in the right order!!

First of all, you didn't unzip/extract hijackthis.. and it's still in the tempfolder.
So I strongly advise to unzip/extract hijackthis.zip.
Read here how to unzip/extract properly:
http://metallica.geekstogo.com/xpcompressedexplanation.html
Create a permanent folder and move hijackthis.exe into it. The reason is because hijackthis creates backups and when it's in your temp-folder it can be accidentally deleted.
How do you make a permanent folder:

Click My Computer, then C:\ and then on Program Files.
In the menu bar, File->New->Folder.
That will create a folder named New Folder, which you can rename to "HJT" or "HijackThis".
Now you have C:\Program Files\HijackThis. Put your HijackThis.exe there.

* Go to start > controlpanel > software > Add or Remove Programs and uninstall next if present:

SpywareBot <== this is a so called spyware remover with a bed reputation

* Download smitRem and save the file to your desktop.
Doubleclick it and choose install. This will create a new folder on your desktop with the name smitrem.

* Reboot into Safe Mode`: ( without networking support !)
°To get into the Windows XP Safe Mode, restart your computer and, just before Windows starts to load, tap the F8 key a few times.
Choose Safe Mode from the menu that will appear and press Enter.

* Start HijackThis, close all open windows leaving only HijackThis running. Place a check against each of the following if still present:

O2 - BHO: (no name) - {5753791b-f607-48ca-814e-91c14d081f9e} - C:\Program Files\IntCodec\isaddon.dll
O3 - Toolbar: Protection Bar - {d1ac752e-883f-4ed8-8828-b618c3a72152} - C:\Program Files\IntCodec\iesplugin.dll
O4 - HKLM\..\Run: [SpywareBot] C:\Program Files\SpywareBot\SpywareBot.exe -boot

* Click on Fix Checked when finished and exit HijackThis.
Make sure your Internet Explorer is closed when you click Fix Checked!

* Using Windows Explorer, locate the following folder and delete if still present:

C:\Program Files\SpywareBot

(running smitrem should deal with the intCodec folder)

* Open the smitRem folder, then double click the RunThis.bat file to start the tool. Follow the prompts on screen.
Wait for the tool to complete and disk cleanup to finish.

* Reboot back into Windows normal mode.

Post a new HijackThis Log and the contents of smitfiles.txt which is present on your Homedrive (C:\ in most cases)
in you next reply.