Basil,
Thanks for getting back to this post so soon!
Well, I am using GD2 so I too am not sure if that matters. I did get it working finally.
I used Allen's post from page one. I would post my inc_features2.php but it has a copyright in it and I don't want to get in any trouble on this forum for posting it. But, if you follow Allen's post to the letter you will get it working. The is one small difference on my install. Since my PP is integrated with my ubbt I didn't have to set any of the parameters for my database. So I DIDN'T uncomment any lines of code.
My issue with the black thumbnails was fixed by adding a trailing / to the data path in my photopost config. This is located on the "edit integration" page of the admin section. The field is URL to your PhotoPost DATA directory and for me to get the thumbnails to work I had to edit the field to this
http://forums.yourdomain.com/photopost/data/
So it all works now! Thanks for the help!