Vista - Start & Stop Programs @ Session Connect & Disconnect

Vista Business-SP1

I want to start a program when a User Connection starts and stop it when a
User Connection stops.

I have four user accounts which I switch between (they are more like
workspaces), I have a desktop application that I want to use for each
account and I want to see the same data in all four accounts.

So I planned on setting up two scheduled tasks for each account

1. triggered by "On Connect to User Session" to starts the program
2. triggered by "On DisConnect to User Session" to use KILLTASK to end the
program

Both tasks display message before taking the respective actions

I set up the tasks for one User Account with the intent of "cloning" them to
the other 3 accounts

As far as I can see the scheduled tasks are never executed.

This is my first attempt to use the Task Scheduler.