Oh, I see. Make sure the differential flange seal is OK, you shouldn't have fluid in there. Getting these axles out is not too difficult once you've done it, but disconnecting the a-arm and getting the axle out is a little tough. Be careful, there's a lot of tension on the a-arm. Also, you'll find the axle doesn't want to come out of the differential, you have to pry it out with a pry bar, give it a quick pry and it will pop out. Check service bulletins too, I think they have one related to this issue.
Not hard at all. There are two bolts that attach the wheel assembly to the front strut. It will take a breaker bar or impact to get them loose. After they are out, the entire wheel assembly will pivot on the lower ball joint and allow you to pull the axle out. Back up a little, you will also need to remove the bolt from the wheel hub to the axle. After that is out, you will need to drive the axle back from the hub with a pipe/bar and hammer. Don't have to hit hard. A few lite taps will drive it back. Changed mine in about an hour. You will want to pull out the anti-lock sensor so you do not put tension on wire. 10 mm bolt holds it in.