Using that Boolean

I started off with a basic box. To this I added the letter C taken from the spline menu. I morphed the C into a 3D object by modifying it's properties using the modify tool. I converted the spline into an editable poly, clicked on edit spline and extruded the object. I then made sure the C was slightly thicker then the box I created. Once this was done I went back to the create tool and selected the compound objects menu. I then clicked on ProBoolean and selected my to object. This then enabled the C to cut a shape into the box, the same way a cookie cutter cuts into dough.