Mouse to edge screen movement

[fish]

Well, as the title states, I wish to know how to move the screen on a 2d plan when the mouse gets close to the edge of the screen. I can usually figure these things out but this has me stumped.

Thanks for your help in advance.

[fish]

Bump.

*Update, ok I manage to figure out a method that works pretty well. For those of you who might need a similar solution, I used http://hutonggames.com/playmakerforum/index.php?topic=5862.0 to get the screen position of the mouse and translate the vector 3 of the camera in the direction the mouse scrolls very easily.