For starters uninstall the Windows Defender software. Not only does it take up
too much memory, it also interferes with LimeWire and always has tried to
delete it even before Microsoft bought it from the original developer.

Also, if you still have that Etomi software, uninstall it too.
It is probably interfering with LimeWire.

Run Hijackthis again, click "Do a system scan only" and put check marks on these items:
(If you uninstalled Windows Defender and etomi then those items should already be gone.)

O2 - BHO: Shareaza Web Download Hook - {0EEDB912-C5FA-486F-8334-57288578C627} - C:\Program Files\Etomi\Plugins\RazaWebHook.dll (file missing)
O2 - BHO: (no name) - {549B5CA7-4A86-11D7-A4DF-000874180BB3} - (no file)
O2 - BHO: (no name) - {77701e16-9bfe-4b63-a5b4-7bd156758a37} - (no file)
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O4 - HKLM\..\Run: [CHotkey] mHotkey.exe
O4 - HKLM\..\Run: [Lexmark X1100 Series] "C:\Program Files\Lexmark X1100 Series\lxbkbmgr.exe"
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Program Files\Common Files\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKLM\..\Run: [fss] C:\Program Files\Akidthaine\fss.exe
O4 - HKLM\..\Run: [Picasa Media Detector] C:\Program Files\Picasa2\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
O4 - HKCU\..\Run: [MoneyAgent] "C:\Program Files\Microsoft Money\System\mnyexpr.exe"
O4 - HKCU\..\Run: [STManager] "C:\Program Files\SpeedTouch\Dr SpeedTouch\drst.exe" -b
O4 - HKCU\..\Run: [NCLaunch] C:\WINDOWS\NCLAUNCH.EXe
O4 - HKCU\..\Run: [balamory screen saver] "C:\Program Files\balamory\Screen Saver\TaskTray.exe"
O4 - HKCU\..\Run: [IncrediMail] C:\PROGRA~1\INCRED~1\bin\IncMail.exe /c
O4 - HKCU\..\Run: [KazaGold] C:\Program Files\Kaza Gold 3.2\KazaGold3.2.exe /hide
O4 - HKCU\..\Run: [SweetIM] C:\Program Files\Macrogaming\SweetIM\SweetIM.exe
O4 - HKCU\..\Run: [kdx] C:\WINDOWS\kdx\KHost.exe -all
O4 - HKCU\..\Run: [BitTorrent] "C:\Program Files\BitTorrent\bittorrent.exe" --force_start_minimized
O4 - Startup: Adobe Gamma.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Kodak EasyShare software.lnk = C:\Program Files\Kodak\Kodak EasyShare software\bin\EasyShare.exe
O4 - Global Startup: Kodak software updater.lnk = C:\Program Files\Kodak\KODAK Software Updater\7288971\Program\Kodak Software Updater.exe
O8 - Extra context menu item: &Search - http://edits.mywebsearch.com/toolbar...rch.jhtml?p=ZZ
O8 - Extra context menu item: Download with &Etomi - res://C:\Program Files\Etomi\Plugins\RazaWebHook.dll/3000
O16 - DPF: {205FF73B-CA67-11D5-99DD-444553540000} - http://www.spywarestormer.com/files2/Install.cab
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1150\Intel 32\IDriverT.exe


Now press the "Fix checked" button and reboot. Your computer will seem much faster already.
LimeWire might work better but if not, there's probably a little more cleaning up to do.

Memory prices are really cheap right now. See if you can get another gigabyte
for your computer. The specific type is probably "400MHz DDR - PC3200".
The parts guy will know what that means.