AutoMouseClicker - random intervals, loop mouse events, XP Visual Styles support, system tray with customizable icon themes
The program is called auto mouse clicker, its great. You choose where the mouse clicks, the time in between the clicks and if its a right or left click.
On the site you can see pictures of it and suff to help you.
And btw if you want it to loop infinite amt of times set the loop # to 0