Hi Katherine,
Probably your best bet is to take some cuttings from an existing plant, and raise them in a damp sand tray until they have roots and can be potted on. From my experience with other conifers this may take years before roots form! To speed the process up you could try root growth hormones on the cut ends. Juvenile leaves may not appear on the cutting raised plants, and the growth form may be a bit different from seedling raised ones but it should work.
Otherwise if you can get hold of some seed, you could try sowing them in a sand/ peat mix . This species is really slow growing, and likes very infertile soils, so the main thing is not to fertilise any plants you do get to grow. They also seem to be quite susceptible to root rot.
Cheers,
Rowan