The axle ends are probably PRESS FIT into the hubs ...
A special tool may be required to remove them.
The hub's cartridge bearings are not meant to be serviced -- if the bearings need to be serviced then you should probably bring them to the LBS of your choice ([COLOR= #808080]call around -- not all shops are equal in how well they perform 'routine' services[/COLOR]) to have them replaced.
To be honest I don't know if they need to be replaced, I just noticed a bit of play on the front wheel and I would like to have a look. Either it's the bearings or the hub needs to be tightened. Right?