well your friend is in quite a bad sitiuation since to obtain the NSW registration form for STAT you need to phone UAC on this number:
(02) 9752 0200. However this will take some time to arrive since they mail it to you.
You also need to submit the "Supplementary Form A" which was due on september 30, since this form needs your STAT registation number you should submit this form together with the STAT registration form. The Supplementary Form A is found in the UAC guide and instructions on how to fill it out are contained in the guide.
I would suggest to call the UAC (02) 9752 0200 and find a way for them to get you the registration form such as by fax a place where to collect one. Maybe they may even extend the due date a bit if you seem desperate enough, i know personally i didn't submit the supplementary form A in time but they told me to urgently send along with the STAT registration form ASAP.
I hope that helps, if you have other questions don't hesitate to ask