It looks like the wheel bearing is not pressed into the knuckle, so you should be able to loosen the bolts for the wheel hub and remove it as an assembly.
Before you do this you will need to remove the wheel knuckle. This usually requires a special removal tool.
I would suggest that you find a service manual with pictures to help you with this procedure and to make sure that you properly torque the bolts after replacement.
〉 Answered on Dec 6th, 2008 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines