I am currently doing a TAFE course in Business advertisisng and I'm doing a diploma course (well, i might be using Certificate IV since Diploma is split into Cert IV and then the diploma course). I applied via UAC... so the way will access your mark here is...
Pass: 4
Credit: 5
Distinction: 6
High Distinction 7
You will hav to find an average of your course marks and this mark will be converted nto a UAI by a table set by UAI which has the marks...
so... if I have a 5.5 average (by adding my credits and maybe one pass, and dividing it my the total credit points of the courses combined) you might get a 83 UAI if you are doing the cert iv courses.
Look at the GPA Average thread in uni transfers and you will see...