Here's a few steps to get your file on renderosity.  SOrry if it's not INJ/rem.  Im not on a computer that has poser right now.  and this is the only way i remember how to do it trhough memory.

Steps 1, 2, and 3 you might know how to do but just in case.

1. Double click on Mike's head and make sure it's on properties.  Then click load morph target, locate your obj file, and apply the morph (name it Nelson or something).  Then go to Parameters, click on the Nelson morph, make sure it's on one so your head looks like Liam Nelson.

2. Click on your figure.  Go 2 the library,  and then poses.  Click on the + button.  Name your Pose. 

3. Go find the pz2 file.  It should be under runtime/library/pose.  Copy your file.  Go make a new folder called runtime and then put a folder called library in it and then put a library called pose in that and then paste the pz2 in.  Go back to your new runtime folder, right click-->send to  ---->compressed zip folder.

4. before you submit it anywhere, you need to have the file stored somewhere online.  This site requires no money or registration and lets u host files.   http://storeandserve.com/?gclid=CKHZgYDR2IYCFQR0NAodlyMW5g   If there's something wrong with that link, just type storeandserve.com            Follow the steps to upload ur zip file onto it and remember the URL.  I'd also reccomend uploading a render of his head 2 be used as a thumbnail.

5. Go to renderosity free stuff.  Click upload which is next to browse and search.  There are several thigns you have to do.  Maybe title it Qui Gon or Liam Nelson.  Put in that you need Poser to run it.  The system requirements doesn't have much importance.  In your notes, you might wanna right you have to extract it to c/programfiles/poser6(or poser five or whatever).    I'm guessing that it would be non-commercial, but im not to good with legal stuff.  Type in the URL to your file and to the image. 

And that's it.