help my computer is all messed up
Please help!

My computer warned me that I had Spyware/Adware so I cleaned everything out but two things won't go away!!
It put a background up on my desktop when it showed me this and now the background is still there. Also, whenever I go somewhere it takes a LOOONG time to load and alot of this aren't responding anymore.
I used Spy-Bot, Ad-Aware, and a couple online scans already and all of them tell me that nothing is wrong but HiJack This shows two things that won't go away.

I don't know what to do!!

Here's my log file:
Logfile of HijackThis v1.99.1
Scan saved at 4:55:17 PM, on 7/7/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Canon\MultiPASS4\MPSERVIC.EXE
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\wanmpsvc.exe
C:\Program Files\Canon\MultiPASS4\MPDBMgr.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Yahoo!\Messenger\YPager.exe
C:\Documents and Settings\Wendy\Desktop\spyware cleanup\HijackThis.exe
O20 - Winlogon Notify: artm_newreg - C:\Documents and Settings\All Users\Documents\Settings\artm_new.dll
O23 - Service: InstallDriver Table Manager (IDriverT) - Unknown owner - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe (file missing)
Thank you in advance to anyone who takes time to help me.
Ja,
animecrazy0335