Slow boot with XP--tried everything I know

Please help.

I have a 2003 Gateway computer (pentium (R) CPU, 2.53 GHz, 512 MB RAM, 75 GB with about 8 GB used) which uses XP as its operating system. When my husband and I bought the computer last year, boot up was really fast. Now, however, it takes almost 2 minutes to bring up the desktop screen. We don't use the computer for much except email, digital pictures, word processing, and the internet, so we don't have a lot of fancy stuff (i.e. gaming and the like) going on.

I have tried everything I know to "fix" this problem. I ran spybot and ad-aware (they found a few spyware programs, but removing these entries did not really do anything to help boot time.

I also ran msconfig and, using some helpful windows websites, disabled some programs at startup that we don't use to help streamline things. This also did not seem to help very much.

I have done a disc cleanup, disc scan, and a disc defrag without any result. I also ran Norton AV (after doing a live update). It did not find anything unusual.

I suppose, if all else fails, we can live with the 2 minute boot, but I remember that this computer used to boot up within 15-20 seconds. I am curious as to why things have declined. I am worried that things will get worse.

I ran hijackthis.exe, and here is what it said:
Logfile of HijackThis v1.98.0
Scan saved at 11:13:13 PM, on 7/14/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINNT\System32\drivers\CDAC11BA.EXE
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINNT\System32\nvsvc32.exe
C:\Program Files\Common Files\Lanovation\PrismXL\PRISMXL.SYS
C:\WINNT\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\WINNT\System32\spool\DRIVERS\W32X86\3\E_S0HIC1.EXE
C:\PROGRA~1\PANICW~1\POP-UP~1\PSFree.exe
C:\Program Files\AT&T\WnClient\Programs\WNConnect.exe
C:\Program Files\Messenger\msmsgs.exe
C:\PROGRA~1\AT&T\WnClient\Programs\WNCSMS~1.EXE
C:\WINNT\System32\wuauclt.exe
C:\Program Files\Symantec\LiveUpdate\ALUNOTIFY.EXE
C:\WINNT\explorer.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Common Files\Symantec Shared\NMain.exe
C:\PROGRA~1\NORTON~1\navw32.exe
C:\Documents and Settings\Owner\Local Settings\Temporary Internet Files\Content.IE5\81U3C1IN\HijackThis[1].exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.worldnet.att.net/ie4/search/index.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.att.net/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.att.net
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.gateway.net
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer provided by AT&T WorldNet Service
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {243B17DE-77C7-46BF-B94B-0B5F309A0E64} - C:\Program Files\Microsoft Money\System\mnyside.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [Keyboard Preload Check] C:\OEMDRVRS\KEYB\Preload.exe /DEVID: /CLASS:Keyboard /RunValue:"Keyboard Preload Check"
O4 - HKLM\..\Run: [Jet Detection] C:\Program Files\Creative\SBAudigy\PROGRAM\ADGJDet.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Program Files\Common Files\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [EPSON Stylus C82 Series] C:\WINNT\System32\spool\DRIVERS\W32X86\3\E_S0HIC1.EXE /P23 "EPSON Stylus C82 Series" /O6 "USB002" /M "Stylus C82"
O4 - HKLM\..\Run: [GWMDMpi] C:\WINNT\GWMDMpi.exe
O4 - HKLM\..\Run: [MSConfig] C:\WINNT\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKCU\..\Run: [PopUpStopperFreeEdition] "C:\PROGRA~1\PANICW~1\POP-UP~1\PSFree.exe"
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINNT\System32\Shdocvw.dll
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - C:\Program Files\Microsoft Money\System\mnyside.dll
O12 - Plugin for .cdx: C:\Program Files\Internet Explorer\PLUGINS\Npcdp32.dll
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.att.net
O16 - DPF: {99CDFD87-F97A-42E1-9C13-D18220D90AD1} (StartFirstControl.CheckFirst) - hcp://system/StartFirstControl.CAB
O17 - HKLM\System\CCS\Services\Tcpip\..\{3CB1CDF5-7B54-4410-BA97-5AC93CEDF3A1}: NameServer = 12.102.244.1 204.127.129.1
O17 - HKLM\System\CS1\Services\Tcpip\..\{3CB1CDF5-7B54-4410-BA97-5AC93CEDF3A1}: NameServer = 12.102.244.1 204.127.129.1

Any assistance that you could provide would be most helpful and appreciated. I don't know what else to do (save wipe the harddrive clean and start over). Please advise. I have run out of things to try.

Best regards,
Elva