Mate , your obviously missing something .
1 - do you have the pics on your PC ?
2 - click post a reply ( obvious )
3 - you should see this
AusCelebs Picture Uploader , with 15 boxes to upload files to .
4 - you may have to agree to he terms and conditions of the uploader
5 - click browse to find the pic on your PC .
6 - click upload
7 - once uploaded , click submit
See how that goes