Change the actual visual grid size?

all of my greybox meshes are power of 2. i’ve already enabled power of 2 grid snapping but when i go into an ortho view the grid is some odd unit. please tell me someone has a workaround for this. i’d like to set the grid snapping to 2 and when i move my object it moves 2 meters… i have no idea how to do this atm. please tell me there is a way to change all of this in UDK???

Cheers