Aside from the Australian national government, you may want to consider grant programs offered by state and local governing bodies within Australia. These grants tend to have a tighter, more refined focus on what they fund than do national government grants, however. You may also want to consider private grant programs, although these tend to be even more specific as they tend to come from institutions and companies with exceptionally specific mandates.
You can also take advantage of the Small Business Startup Assessment Tool below and see the tools and resources you need to succeed at launching your business. It takes just a minute and will also tell you if there may be any funding programs available.