Accelerometer being able to not affect one item


I want to be able to use the accelerometer on the iphone to be able to move a character on the x axis only, but then also able to affect backgrounds on the x AND y axis. Is there a possible way to do this? I have this working with the x axis but being able to restrict a gameobject to not use the y axis is very odd.

The accelerometer returns seperate values for x, y and z. Just use x only for the character, and use both x and y for the backgrounds.