These are GUI applications that can be opened from the run line.
These applications are not located in the C:\windows\system32\ directory, the
keys for these applications are located in the registry under:

HKLM\software\microsoft\windows\currentversion\app paths
BCKGZM.EXE - Backgammon
CHKRZM.EXE - Checkers
CONF.EXE - NetMeeting
DIALER.EXE - Phone Dialer
HELPCTR.EXE - Help and Support
HRTZZM.EXE - Internet Hearts
HYPERTRM.EXE - HyperTerminal
ICWCONN1.EXE - Internet Connection Wizard
IEXPLORE.EXE - Internet Explorer
INETWIZ.EXE - Setup Your Internet Connection
INSTALL.EXE - User's Folder
MIGWIZ.EXE - File and Settings Transfer Wizard
MOVIEMK.EXE - Windows Movie Maker
MPLAYER2.EXE - Windows Media Player Version 6.4.09.1120
MSCONFIG.EXE - System Configuration Utility
MSIMN.EXE - Outlook Express
MSINFO32.EXE - System Information
MSMSGS.EXE - Windows Messenger
MSN6.EXE - MSN Explorer
PBRUSH.EXE - Paint
PINBALL.EXE - Pinball
RVSEZM.EXE - Reversi
SHVLZM.EXE - Spades
TABLE30.EXE - User's Folder
WAB.EXE - Windows Address Book
WABMIG.EXE - Address Book Import Tool
WINNT32.EXE - User's Folder
WMPLAYER.EXE - Windows Media Player
WRITE.EXE - Wordpad

These .EXE files reside in (c:\windows\system32\) or (c:\windows\) directory.
ACCWIZ.EXE - Accessibility Wizard
CALC.EXE - Calculator
CHARMAP.EXE - Character Map
CLEANMGR.EXE - Disk Space Cleanup Manager
CLICONFG.EXE - SQL Client Configuration Utility
CLIPBRD.EXE - Clipbook Viewer
CLSPACK.EXE - Class Package Export Tool
CMD.EXE - Command Line
CMSTP.EXE - Connection Manager Profile Installer
CONTROL.EXE - Control Panel
DCOMCNFG.EXE - Component Services
DDESHARE.EXE - DDE Share
DRWATSON.EXE - Doctor Watson v1.00b
DRWTSN32.EXE - Doctor Watson Settings
DVDPLAY.EXE - DVD Player
DXDIAG.EXE - DirectX Diagnostics
EUDCEDIT.EXE - Private Character Editor
EVENTVWR.EXE - Event Viewer
EXPLORER.EXE - Windows Explorer
FREECELL.EXE - Free Cell
FXSCLNT.EXE - Fax Console
FXSCOVER.EXE - Fax Cover Page Editor
FXSEND.EXE - MS Fax Send Note Utility
IEXPRESS.EXE - IExpress 2.0
LOGOFF.EXE - System Logoff
MAGNIFY.EXE - Microsoft Magnifier
MMC.EXE - Microsoft Management Console
MOBSYNC.EXE - Microsoft Synchronization Manager
MPLAY32.EXE - Windows Media Player version 5.1
MSHEARTS.EXE - Hearts
MSPAINT.EXE - Paint
MSTSC.EXE - Remote Desktop Connection
NARRATOR.EXE - Microsoft Narrator
NETSETUP.EXE - Network Setup Wizard
NOTEPAD.EXE - Notepad
NSLOOKUP.EXE - NSLookup Application
NTSD.EXE - Symbolic Debugger for Windows 2000
ODBCAD32.EXE - ODBC Data Source Administrator
OSK.EXE - On Screen Keyboard
OSUNINST.EXE - Windows Uninstall Utility
PACKAGER.EXE - Object Packager
PERFMON.EXE - Performance Monitor
PROGMAN.EXE - Program Manager
RASPHONE.EXE - Remote Access Phonebook
REGEDIT.EXE - Registry Editor
REGEDT32.EXE - Registry Editor
RESET.EXE - Resets Session
RSTRUI.EXE - System Restore
RTCSHARE.EXE - RTC Application Sharing
SFC.EXE - System File Checker
SHRPUBW.EXE - Create Shared Folder
SHUTDOWN.EXE - System Shutdown
SIGVERIF.EXE - File Signature Verification
SNDREC32.EXE - Sound Recorder
SNDVOL32.EXE - Sound Volume
SOL.EXE - Solitaire

SPIDER.EXE - Spider Solitaire
SYNCAPP.EXE - Create A Briefcase
SYSEDIT.EXE - System Configuration Editor
SYSKEY.EXE - SAM Lock Tool
TASKMGR.EXE - Task Manager
TELNET.EXE - MS Telnet Client
TSSHUTDN.EXE - System Shutdown
TOURSTART.EXE - Windows Tour Launcher
UTILMAN.EXE - System Utility Manager
USERINIT.EXE - My Documents
VERIFIER.EXE - Driver Verifier Manager
WIAACMGR.EXE - Scanner and Camera Wizard
WINCHAT.EXE - Windows for Workgroups Chat
WINHELP.EXE - Windows Help Engine
WINHLP32.EXE - Help
WINMINE.EXE - Minesweeper
WINVER.EXE - Windows Version Information
WRITE.EXE - WordPad
WSCRIPT.EXE - Windows Script Host Settings
WUPDMGR.EXE - Windows Update