Automouse Clicker - Automatic Mouse Click On Coordinates ?

I have found on the Internet a few pieces of code whitch should do automatic mouse click on coordinates I provide by code, I use mouse_event, what I want to do is to send many mouse clicks to another application, with mouse_event it works but it moves the mouse (and I don't want that cause I need the mouse at my disposal)

I've tried sendmessage, postmessage and sendinput but this two functions do the clicks only on objects and the application doesn't have any object at that location, for example if the application receives a mouse click at 100,100 at displays a number. I am using vb 2010 trial