This code implements an automatic logon announcement service. 
The EXE contains two services. One detects when a new user logs
on and sends a message onto the net. The other waits for messages
and announces them. 

Once you compile the code, use the INSTALL2 program in the TOOLS directory
to install it in the Services applet of the Control Panel. See
the book for details. A typical installation command might
look like this:

..\tools\install2 logonannounce "Logon Announcer" c:\code\ch12\logon2\logonann.exe
..\tools\install2 logonsense "Logon Senser" c:\code\ch12\logon2\logonann.exe

You must specify the complete and correct path to the executable.
You must be logged in as an administrator for this to work. Once you
have installed it, use the Services applet in the Control Panel to
start and stop the services. See the book for details.

To later remove the service, type:

..\tools\remove logonsense
..\tools\remove logonannounce

Again, you must be logged in as an administrator for this to work.