daz studio transparent background problem

Hi guys I got problem with my render, I would like to render object without backround but environment is still visible
http://i868.photobucket.com/albums/ab243/quassimodo666/test_zpsungbgri2.png~original
http://i868.photobucket.com/albums/ab243/quassimodo666/test2_zpsxk3hqsxd.png~original
Ive turn off draw dome and ground.
Any solution?
regards Sareth
Comments
you have envirronment type = none ?
yes its none and same effect is with hdri map
Just to clarify a few things, you are using a hdri map in render settings and there is no actual geometry in the Background?
Your saving as a png file?
When you render do you see a checker pattern in the Back Ground?