You could also try building a dynamic component. Take a look at the Sketchup 7 example of a picket fence component. As you scale the component the pickets are automatically copied and spaced.
To do this with bricks, you would need to build two sub-components: one row with a full brick in the corner and one row with a half brick, so the two rows would be offset. This component could also be used to lay down flooring or drywall.