Grant,
I just did mine about 2 months ago. Piece of cake. I used a large screw driver, hammer, vice, and a bearing installer kit. Didn't take long at all. Pryed the seals out, put carrier in vice (carefully with it wrapped in a towel to prevent any consmetic damage), used the large screwdriver and hammer to pound the bearings out from the top. They will come out with some persuasion. I then used some emory cloth to smooth out the inside of the carrier. Smear a little lithium grease inside the carrier and gently pounded the new ones in using a bearing installer kit. They went in without too much effort. Then I put the new seals in and you're all set.
PM or reply if you need any specific info.
HTH,
Dave