dhall... check several posts and/or pages back, i think its about 2-3 pages back... i posted about swapping my bearings out too, w/ pics.
they will probably be a total #$%* to remove... i don't want to admit how long it took to break everything loose, but once it was all free, it went back together nicely.
freeze your bearings before installing them, they will go in easier.
mine were the perfect size where i could put my rubber mallet firmly on them and hit the mallet with a regular hammer to knock them into place.
i ordered from Boss Bearing on eBay... 2 sealed axle bearings and 2 dust seals $15.99 shipped