Attached Link: http://www.senosoft.com/

I've often read thread on how can I make an .RSR for Poser from scratch. Of course P3dO Explorer is not the only solution but P3dO is and easy and quick way.

1st case - You already have a .PNG file in your package. Click "Tools" | "Convert Rsr2Png". This is the Rsr2Png plugin that will mass convert your .PNGs to .RSRs (and the contrary). Click on ".Png to .Rsr".
Click OK.
You've now got a clean .RSR.
Read the Rsr2Png help file for a list of all options.

2nd case - You start from scratch.
2 solutions:

• make a render with Poser with a 91x91 rendering viewport. Click on Copy picture.
• make a picture in your favorite picture editor with a 91x91 size. Click on copy picture.
  Then in P3dO click on "Image | Edit picture". This is P3dO's picture edit Windows. Quite easy to use.
  Click on Paste, then save.
  You've now got a clean .RSR.
  If you also have an Alpha channel : Copy the Alpha channel from your favorite image editor (a layer in PaintShop Pro or Photoshop) then click on Paste Alpha Channel before saving.
  You've now got a clean Alpha Channeled .RSR.
  Yarp

btw One mistaken think I often read too is how can I fix blank .PNGs in Poser. The answer is 1st case (Rsr2Png) and click "Fix blank .Png". The "Fix blank .Png" only reads .PNG - so you don't need to fist convert your .PNG to .RSR - and only fixes blank .PNGs. P3dO detects if a .PNG is blank otherwise it doesn't do anything.

Yarp - author of P3DO Organizer for Poser