What are some common processes in Windows Operating System?

FILENAME : Explorer.exe. PROGRAM NAME : Windows Explorer. DESCRIPTION : Microsoft’s Windows shell. 
 FILENAME : Iexplore.exe. PROGRAM NAME : Microsoft Internet Explorer. DESCRIPTION : Microsoft’s Web browser. 
 FILENAME : Lsass.exe. PROGRAM NAME : Local Security Authentication Server, Windows NT/2000/XP. DESCRIPTION : Validates passwords when users log on. 
 FILENAME : Msimn.exe. PROGRAM NAME : Microsoft Outlook Express. DESCRIPTION : Microsoft’s mail client. 
 FILENAME : Msmsgs.exe. PROGRAM NAME : MSN and Windows Messenger. DESCRIPTION : Microsoft’s IM client. 
 FILENAME : Ndisuio.sys. PROGRAM NAME : NDIS User I/O. DESCRIPTION : Internal Windows driver; performs internal communications tasks within Windows. 
 FILENAME : Rundll32.exe. PROGRAM NAME : Run DLL as a program. DESCRIPTION : Runs code from a dynamic link library (for example, a Control Panel applet) as if it were a complete program. 
 FILENAME : Services.exe. PROGRAM NAME : Windows NT/2000 services. DESCRIPTION : Performs system logging, tracks resources, sends messages and alerts, manages PnP devices, handles Windows networking. 
 FILENAME : Setup_wm.exe. PROGRAM NAME : Windows Media Player Setup. DESCRIPTION : Occasionally tries to check with Microsoft for updates. 
 FILENAME : Svchost.exe. PROGRAM NAME : Generic Host Process for Win32 services (Windows 2000). DESCRIPTION : This program is similar to the Unix inetd.exe 
 FILENAME : Userinit.exe. PROGRAM NAME : Initiate user environment. DESCRIPTION : This program sets up a user’s computing environment immediately after log-on. It starts the shell, establishes network connections, and handles other similar logistics. 
 FILENAME : Winlogon.exe. PROGRAM NAME : Windows log-on utility. DESCRIPTION : Accepts user passwords. 
 FILENAME : Wmplayer.exe. PROGRAM NAME : Windows Media Player. DESCRIPTION : Microsoft’s media player. May be activated by Web pages or other software and can slow the system dramatically.