That's quite a collection you've got there! If you wanted to use any of the pre 1977/non AI lenses on a modern digital or film camera, they can be converted. Lenses made after 1977 will fit new camera's but won't give metering on all models. The D200 is designed to work with metering on AI lenses and I've done it without a problem.
Here's one place in the US that does the conversions
http://www.aiconversions.com/PricesAndShipping.htm I'm not sure if anyone does them in Australia, but it should be easy enough to find out.