If you would like to become a member of OPSO, you can download a membership form (To download, right-click and ‘Save target as…’). Membership costs just $5, so you can send your completed form and a check for $5 to

OPSO
PO Box 1037
Mount Gravatt
QLD 4122

Alternatively, if you would like to become an OPSO Associate please send an email to opso@zipworld.com.au or phone OPSO on (07) 3219 2572.