Thanks for the response Arjay, as for the other app updating it's icon their developers tell me that is not happening so it "should" be safe. As for the NOTIFYICONDATA structure that makes sense I was hoping the icons were registered with a uid in Windows somehow that would allow me to generate a NOTIFYICONDATA structure with the correct uid. Anyway, how would one go about doing this with Active Accessibility? (Googling it now myself) Thanks again.