Create A Screensaver which runs an exe when it starts and terminates when not idle

I require a Screensaver creating which will : 1. Run 3 separate EXE Files (or better, as many as i want, via an "add" button). 2. The settings page will have a tick box next to each exe file so i can disable them (without losing the switches in the boxes in number 4) 3. The settings page should have a drop down box so i can select any exe file i want (for any of the 3 [or more]) 4. Next to each of the exe i have chosen, there should be a blank box so i can enter the switches (long box). I know this is a simple project and i could probably do this myself, and there is similar software already released so the budget for this project is low. I require all source code and rights to the software will belong to me.