Catching Key Input And Closing Wordpad.

[kvarnerexpress 0]

Title practically tells all. whenever the letters "erty" are inserted in that order. i want to be able to close the current active wordpad window. i have no idea how to do this with WinAPI functions although i think i could use FindWindow() and CloseWindow() to close the window maybe? it's the catching input thats bugging me. i need to be able to catch it while another window is active any ideas?