Wasn’t sure where I can report broken links. I found one Here:
You can submit anything that would be a standard Studio/Poser file. If you would like to know more about how the final files should be set up (when you do get past the preliminary review) then we suggest having a look at this page.
The link at the end of that line is not working properly. As it seems important for people wanting to become new vendors, I thought I should point it out.