In order to be admitted to practice, you have to establish that you are of "good fame and character" and should disclose any information that may bear on this point, such as criminal convictions. It is highly recommended that you disclose spent convictions, as failure to disclose such information could be interpreted as misleading and tending to show that you are not of “good fame and character”.
Whilst some people have been admitted to practice despite their criminal record, others have been refused admittance because of it. Where a legal practitioner commits a criminal offence in his or her personal capacity, the offence may be characterised as professional misconduct if it indicates that the offender is unfit to practice. (For more information you can Contact the Law Institute of Victoria or the Board of Examiners for Legal Practitioners).