>>When the following code gets run on Win2000 a new window pops up showing the newly mapped drive. How can we supress this window? We don't have this problem on NT or Win9X OSs. We would rather the users not be confused with this new window.
>>

You can use the Win api to connect without this annoying window...

*FUNCTION ConnectDrive
LPARAMETERS LocalDriveLetter, RemoteName, CurrentUserPassword
***************
*	Param:
*		LocalDriveLetter = letter to assing to the connection
*		RemoteName = sharename of the directory to be mapped (\\server\drive)
*		CurrentUserPassword = optionnal,if differ from the local password
*
***************
*!*	DWORD WNetAddConnection(
*!*	    LPTSTR  lpszRemoteName,	// address of network device name  
*!*	    LPTSTR  lpszPassword,	// address of password 
*!*	    LPTSTR  lpszLocalName 	// address of local device name 
*!*	   )

DECLARE DOUBLE WNetAddConnection IN MPR.DLL ;
    STRING @ lpszRemoteName,;
    STRING @ lpszPassword,;
    STRING @ lpszLocalName

IF LEN(LocalDriveLetter) = 1
	LocalDriveLetter=LocalDriveLetter+':'
ELSE
	LocalDriveLetter=SUBSTR(LocalDriveLetter,1,1)+':'
ENDIF
IF TYPE('CurrentUserPassword') = 'L'
	CurrentUserPassword=.NULL.
ENDIF	
IF !DIRECTORY(LocalDriveLetter+'\')
	? WNetAddConnection(@RemoteName,@CurrentUserPassword,@LocalDriveLetter)
ENDIF
	

HTH :-)