uninstallation

Question

Hi
Friends in a winform I have a button called uninstall .Upon clicking on this button I want to uninstall certain software say for example winamp and also I want to know how to end a process say spool.exe that is running. We can do this by clicking remove in the add/remove programs of control panel and clicking the end process button in the task manager but I want to do it in my program say form1.cs button click event?
plz help
thanks