Mouse macro problem

hello,

I'm developping a bot for some game based on automated mouse movements. I used SendInput() to control the mouse, it works perfectly with programs such as notepad, but when the game is running the mouse doesn't move, I think the game is blocking the mouse hooks.
From what I know SendInput sends messages to the program so the mouse moves, but I want to go a step further. I want to make a program that makes the computer think there are signals coming into the computer from the mouse-port, so the cursor moves... in other words, the program is the mouse itself.
Anyone know how to do that?

=S sorry for the late reply. I'm really busy right now. You might need to find the Mouse Cords in the game. To do this, drag your mouse to the corner of the screen(0,0), scan for the value 0. Move the mouse right. Look for increased value. Move the mouse left(Keeping the X cords of the mouse 0) and look for decreased. Repeat until you have the Y cord of the mouse. Do the same for the X. You should have some basic scanning skills to do this.