If your qualification is found to be equivalent, therefore meeting the academic requirements for registration as an architect, you must complete a minimum of 2 years acceptable practical experience and obtain a pass in the AACA Architectural Practice Examination before you may seek registration. One year of the practical experience must be post-graduate and undertaken in Australia.
If AACA finds that your qualification does not meet the required standard for registration, you will be advised by letter of the subject areas which are deficient so that you may undertake further study in these subjects at an Australian school of architecture to satisfy the academic requirement needed for registration.
Alternatively you may apply to undertake the National Program of Assessment which allows you to demonstrate equivalence through experience. Please refer to the "No Recognised Qualification" page for further information on this process.
No Recognised Qualifications
If you do not have a formal qualification in architecture or your qualification has not been assessed as equivalent to an accredited qualification, but you have substantial skill and experience in the architectural profession, you may wish apply to undertake the National Program of Assessment (NPrA). Information on the NPrA is provided below:
Conceives, designs and constructs new or modified buildings or structures, such as private residences, office buildings, theaters, factories, and other structural property. Gathers and prepares information regarding cost and time estimates, material requirements, and completion times. Requires a bachelor's degree and 2-4 years of experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of complicated tasks. Works under general supervision; typically reports to a supervisor or manager. A certain degree of creativity and latitude is required.
3. I have no clue to how many Architets there are in Australia but I did find a very good website that might help you if you have some more questions. http://www.overseasdigest.com/country/austria.htm
4.Salary. I found a website that told the average in the United states but I didn't fine one for Australia http://swz.salary.com/salarywizard/layouthtmls/swzl_compresult_national_DD19000001.html
I would think that it wouldn't be much of a difference. I take it that you are and Architect that is thinking about moving to Australia. Good luck on your move if you decide to go.