2d mouse in 3d world...

How can I pick objects in 3d world with 2d mouse.

CameraPick ( camera,viewport_x#,viewport_y# )

Thank you :)

No problem, be sure to post again if you need help, plenty of helpful people around here :)

Jokkeri, if you want to drag entities with the mouse, check out this.
http://www.blitzbasic.com/codearcs/codearcs.php?code=379#comments