logon:
CreateProcessAsUser
CreateProcessWithLogonW
CryptProtectData
GetTokenInformation
ImpersonateLoggedOnUser
LogonUser
LsaEnumerateLogonSessions
LsaGetLogonSessionData
MAPILogon
NetWkstaUserEnum
WNetAddConnection
Enumerating network sessions established on a server
How to enumerate logon sessions on local computer
How to enumerate sessions and processes on a specified terminal server
How to prevent users from accessing the Windows Desktop and from switching to other applications
How to read email messages using Simple MAPI
How to Start a Process as Another User (NT/XP/2K)
MapiSendMail class for Visual FoxPro application
Playing WAV sounds simultaneously
Sending email messages with Simple MAPI
Using custom Simple MapiSendMail class