If you are simply setting snap spacings for routing layers and you are using wires in 6.1, you should look into either creating routing tracks, or setting up routing grids in the techfile.
To create routing tracks, use Create->P&R Objects->Track Patterns
To setup routing grids, you can define them in the constraintGroups section of the techfile under the sub-section routingGrids.
Once you setup either of these, then on your Editor Options form in layout, you can choose to snap to manufacturing grid (default), track patterns, or routing grids.
Options->Editor, then look in the bottom left to set Snapping for Wires.