steering rack in AU

[sallad61]

Hi peoples,not sure if in right spot but if not someone may point me there?.has anyone replaced a steering rack?,was told by mechanic today(rego ticket)leak`s oil,270$ to fix,could anyone help me by sending info to me on how i can fix myself?.if someone could e-mail me with pic`s or help out would really be great!am pensioner &not much money,am trying to get out cheaper.