ok when you get the knuckle out, you will need to get the bearing out. That means getting it pressed out. There is a C clip that needs to be removed and then you can press the bearing out. Don't try and knock it out. Go to a machine shop with a hydraulic press.
You can leave the strut on the car and still remove the knuckle. It will just slide off once you get that bolt loose. here is my own thread on this issue.
http://www.aveoforum.com/forum/f85/r...ng-help-13885/