Shell commands provide quick access to many folders locations. For example, you can use the command:

shell:My Music

… to open your music folder. You can then create shortcuts to that folder, from that folder, find out where that folder is located, create new folders inside that folder, or even move files to and from that folder.
To use a shell command copy and paste, or type the shell command, into the Start Search box …

or the Run box…

and hit enter. Go ahead and try the shell:My Music command.
The complete list of Vista shell commands is below:
Note: Some of these shell commands will only work on the 64 bit version of Vista.

shell:AddNewProgramsFolder – Opens the Install a program from the network location.

shell:Administrative Tools – Opens the Administrative Tools section of the Control Panel.

shell:AppData – Opens the hidden location C:’Users’(your username)’AppData’Roaming

shell:AppUpdatesFolder – Opens the Installed Windows Updates location in Program and Files.

shell:Cache – Opens Internet Explorer’s temporary internet files folder.

shell:CD Burning – Opens the location where files are stored temporarily before Windows Vista burns them.

shell:ChangeRemoveProgramsFolder – Opens Programs and Features in the Control Panel.

shell:Common Administrative Tools – Opens the Administrative Tools section of the Control Panel.

shell:Common AppData – Opens the hidden location C:’ProgramData

shell:Common Desktop – Opens the Public Users Desktop folder location. C:’Users’Public’Desktop

shell:Common Documents – Opens the Public Users Documents folder location. C:’Users’Public’Documents

shell:Common Programs – Opens the Start menu shortcuts location.

shell:Common Start Menu – Opens the location of the shortcut links in your Start Menu.

shell:Common Startup – Opens the location where shortcuts to programs that are set to start when Vista boots up are saved.

shell:Common Templates – Opens C:’ProgramData’Microsoft’Windows’Templates

shell:CommonDownloads – Opens the Public Users Downloads folder location. C:’Users’Public’Downloads

shell:CommonMusic – Opens the Public Users Music folder location. C:’Users’Public’Music

shell:CommonPictures – Opens the Public Users Pictures folder location. C:’Users’Public’Pictures

shell:CommonVideo – Opens the Public Users Video folder location. C:’Users’Public’Videos

shell:ConflictFolder – Opens the Sync Center Conflicts location.

shell:ConnectionsFolder – Quickly open Network Connections.

shell:Contacts – Opens your username’s Contacts folder location.

shell:ControlPanelFolder – Opens the Control Panel.

shell:Cookies – Opens one of the folders where Internet Explorer saves cookies.

shell:Cookies’Low – Opens the other folder where Internet Explorer saves cookies.

shell:CredentialManager – Opens the hidden C:’Users’(your username)’AppData’Roaming’Microsoft’Credentials
shell:CryptoKeys – Opens the hidden C:’Users’(your username)’AppData’Roaming’Microsoft’Crypto
shell:default Gadgets – Opens the default Windows Sidebar Gadgets location.
shell:desktop – Opens your personal username’s Desktop folder location.
shell:downloads – Opens your personal username’s Downloads folder location.
shell:dpapiKeys – Opens the hidden C:’Users’(your username)’AppData’Roaming’Microsoft’Protect
shell:Favorites – Opens your personal username’s Favorites folder location.
shell:Fonts – Opens Vista’s Fonts folder location.
shell:Gadgets – Opens your user account’s Windows Sidebar Gadgets that you saved location.
shell:Games – Opens the Games folder from the left Start menu button location.
shell:GameTasks – Opens the hidden C:’Users’(your username)’AppData’Local’Microsoft’Windows’GameExplorer
shell:History – Opens Internet Explorer’s history of websites visited.
shell:InternetFolder Opens the 32 bit Internet Explorer.
shell:Links – Opens your personal username’s Links folder location.
shell:Local AppData Opens the hidden C:’Users’(your username)’AppData’Local
shell:LocalAppDataLow – Opend the hidden C:’Users’(your username)’AppData’LocalLow
shell:My Music – Opens your personal username’s Music folder location.
shell:My Pictures – Opens your personal username’s Pictures folder location.
shell:My Video – Opens your personal username’s Video folder location.
shell:MyComputerFolder – Opens Computer window.
shell:NetHood – Opens Network Shortcuts folder location.
shell:NetworkPlacesFolder Opens the Network Places location.
shell:OEM Links – Opens the links placed on your computer by your computer manufacturer location.
shell:Original Images – Opens Windows Photo Gallery Original Images folder location.
shell:Personal – Opens your personal username’s Documents folder location.
shell:PhotoAlbums – Opens the Slide Show folder location for your username’s Pictures folder.
shell:Playlists – Opens the Playlists folder location for your username’s Music folder.
shell:PrintersFolder – Opens Printers in the Control Panel.
shell:PrintHood – Opens the Printer Shortcuts location.
shell:Profile – Opens your main username folder location.
shell:ProgramFiles – Opens the Program Files folder.
shell:ProgramFilesCommon – Opens the Common Files folder in Program Files.
shell:ProgramFilesCommonX86 – Opens the Common Files folder in Program Files (x86).
shell:ProgramFilesX86 – Opens the Program Files (x86) folder.
shell:Programs – Opens the Start menu’s Programs shortcuts location.
shell:Public – Opens the Public User folder.
shell:PublicGameTasks – Opens C:’ProgramData’Microsoft’Windows’GameExplorer
shell:Quick Launch – Opens the Quick Launch shortcuts folder location.
shell:Recent – Opens Recent Items location.
shell:RecycleBinFolder – Opens the Recycle Bin folder.
shell:ResourceDir – Opens Vista’s Resources folder location.
shell:SampleMusic – Opens the Sample Music folder in the Public Users folder.
shell:SamplePictures – Opens the Sample Pictures folder in the Public Users folder.
shell:SamplePlaylists – Opens the Sample Playlist folder in the Public Users folder.
shell:SampleVideos – Opens the Sample Videos folder in the Public Users folder.
shell:SavedGames – Opens your personal username’s Saved Games folder location.
shell:Searches – Opens your personal username’s Searches folder location.
shell:SendTo – Opens the Context menu’s SendTo folder location.
shell:Start Menu – Opens the location of the shortcut links in your Start Menu.
shell:Startup – Opens the location where shortcuts to programs that are set to start when Vista boots up are saved.
shell:SyncCenterFolder – Opens Sync Center from the Control Panel.
shell:SyncResultsFolder – Opens the Sync Results for the Sync Center.
shell:SyncSetupFolder – Open the Setup new sync partnerships in the Sync Center.
shell:System – Opens the System32 folder location.
shell:SystemCertificates Opens the SystemCertificates folder location.
shell:SystemX86 – Opens the SysWowxx folder location.
shell:Templates – Opens the Templates folder location.
shell:UserProfiles – Opens the "C:’Users" location.
shell:UsersFilesFolder – Opens your main username folder location.
shell:Windows – Opens the "C:’Windows" location.