application lançees au demarrage

bonjour
j'aimerai savoir quelle application sont indispensable au demarrage dans
msconf

je suppose que j'ai trop d'applications qui se lance au demarrage et que sa
rallenti mon pc mais je ne sait pas se qu'il faut supprime
REGEDIT4

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
"CTFMON.EXE"="C:\\WINDOWS\\system32\\ctfmon.exe"
"swg"="C:\\Program
Files\\Google\\GoogleToolbarNotifier\\GoogleToolbarNotifier.exe"
"MSMSGS"="\"C:\\Program Files\\Messenger\\msmsgs.exe\" /background"
"InstantTray"="C:\\Program Files\\Pinnacle\\Shared
Files\\InstantCDDVD\\PCLETray.exe"
"IW_Drop_Icon"="C:\\Program
Files\\Pinnacle\\InstantCDDVD\\InstantWrite\\iwctrl.exe /dropdisc"
"ClocX"="C:\\Program Files\\ClocX\\ClocX.exe"
"VisualTaskTips"="C:\\Program Files\\VisualTaskTips\\VisualTaskTips.exe"
"RocketDock"="\"C:\\WINDOWS\\BricoPacks\\Vista Inspirat
2\\RocketDock\\RocketDock.exe\""

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
"SoundMan"="SOUNDMAN.EXE"
"NvCplDaemon"="RUNDLL32.EXE C:\\WINDOWS\\system32\\NvCpl.dll,NvStartup"
"nwiz"="nwiz.exe /install"
"NvMediaCenter"="RunDLL32.exe NvMCTray.dll,NvTaskbarInit"
"avast!"="C:\\PROGRA~1\\ALWILS~1\\Avast4\\ashDisp.exe"
"OpwareSE2"="\"C:\\Program Files\\ScanSoft\\OmniPageSE2.0\\OpwareSE2.exe\""
"OPSE reminder"="\"C:\\Program
Files\\ScanSoft\\OmniPageSE2.0\\EregFre\\Ereg.exe\" -r \"C:\\Program
Files\\ScanSoft\\OmniPageSE2.0\\EregFre\\ereg.ini\""
"WireLessMouse "="C:\\Program Files\\Multimedia Combo Set\\MouseDrv.exe"
"WireLessKeyboard "="C:\\Program Files\\Multimedia Combo
Set\\PS2USBKbdDrv.exe"
"Babylon Client"="C:\\Program Files\\Babylon\\Babylon-Pro\\Babylon.exe
-AutoStart"
"PinnacleDriverCheck"="C:\\WINDOWS\\system32\\PSDrvCheck.exe"
"BluetoothAuthenticationAgent"="rundll32.exe
bthprops.cpl,,BluetoothAuthenticationAgent"
"OFFICE One Startup v1"="C:\\Program Files\\Mindscape\\OFFICE One\\OFFICE
One Startup v1\\oostartupv1.exe"
"SunJavaUpdateSched"="\"C:\\Program
Files\\Java\\jre1.6.0_03\\bin\\jusched.exe\""
"ZoneAlarm Client"="\"C:\\Program Files\\Zone Labs\\ZoneAlarm\\zlclient.exe\""
"ABBYY Community Agent"="C:\\Program Files\\ABBYY FineReader 5.0
Pro\\CAgent.exe"
"Tweak UI"="RUNDLL32.EXE TWEAKUI.CPL,TweakMeUp"
"QuickTime Task"="\"C:\\WINDOWS\\system32\\qttask.exe\" -atboottime"
"NVCLOCK"="Rundll32 nvclock.dll,fnNvclock"
"iTunesHelper"="\"C:\\Program Files\\iTunes\\iTunesHelper.exe\""
"PCMService"="\"C:\\Program Files\\CyberLink\\PowerCinema\\PCMService.exe\""
"LogitechCommunicationsManager"="\"C:\\Program Files\\Fichiers
communs\\LogiShrd\\LComMgr\\Communications_Helper.exe\""
"LogitechQuickCamRibbon"="\"C:\\Program
Files\\Labtec\\WebCam10\\WebCam10.exe\" /hide"
"LogitechVideoRepair"="C:\\Program Files\\Logitech\\Video\\ISStart.exe"
"LogitechVideoTray"="C:\\Program Files\\Logitech\\Video\\LogiTray.exe"
"LogitechGalleryRepair"="C:\\Program Files\\Logitech\\Video\\ISStart.exe"
"Adobe Photo Downloader"="\"C:\\Program Files\\Adobe\\Photoshop Album
Edition Découverte\\3.2\\Apps\\apdproxy.exe\""
"Adobe Reader Speed Launcher"="\"C:\\Program Files\\Adobe\\Reader
8.0\\Reader\\Reader_sl.exe\""
"LiveMonitor"="C:\\Program Files\\MSI\\Live Update 3\\LMonitor.exe"
"NeroFilterCheck"="C:\\WINDOWS\\system32\\NeroCheck.exe"

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run]
"CTFMON.EXE"="C:\\WINDOWS\\system32\\CTFMON.EXE"
"msnmsgr"="\"C:\\Program Files\\MSN Messenger\\msnmsgr.exe\" /background"

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\RunOnce]
"IETI"="C:\\Program Files\\Skype\\Phone\\IEPlugin\\unins000.exe /VERYSILENT
/SUPPRESSMSGBOXES /NORESTART"

merçi a vous