Bob,
Try Tamex Transport.
http://www.tamex.com.au/
They shipped the Servex winch for a fellow Blitzonian recently. If you are after a vehicle ship, PM me.
If its really heavy items (like Carrier Wheels) I recommend you place said items on a pallet before you drop them off for freighting. 99% of stuff these days is moved on a pallet. Easy to obtain to almost any shape or size for free..... Try your local floor tile shop. They can't give the pallets away!!
For others, a cheap method of freight is Busfreight. Up to about 20KG is $20 almost all over the Eastern States. (look in the yellowpages). Use a sturdy rated box,(with crush rating on side) and pack items in plastic shopping bags (stuff them full of crushed newspaper). This is wayyy cheaper than bubble wrap...
Ian