OK, so I decided to leave the axle housing where it is and just replace the half shafts. Sorry to those who were looking for a complete front axle removal how/to, but the Workshop manual has a pretty good write up on it.

I have broken the SurTrack axles down now and separated the half shaft from the axle. My question now is; is it OK to mix grease? The inner CV joint has grease in it already, but I want to pack my existing green cup with grease to make up for the bit that was lost to the new green cup. Is it OK to just add the synthetic bearing grease that I have to the grease that is already there, or should I clean the new joint out completely and re-pack with one type of grease?

Thanks to all for the help so far. This should be done in the next day, or so, and you won't have to read about it any more.