It seems I did this very thing awhile back and in hindsight I think I went about it the wrong way, as you are doing.

I think what gets most people upset is that the vendors are using a character that is primarily targeted to the DAZ user. About the only thing I get from the DAZ market are the props. I have only purchased maybe 3 characters. I must also say that I have both DS and Poser 7, and I use them interchangeably

Most DAZ users, I think, don't realize that with some ingenuity there is always a work around with some products. I have a particular fondness for Niké props and all are made for Poser 6+, but I have managed a couple of times to get around these roadblocks. Of course their are those products that will not work in DS and I avoided those until I got Poser.

So it really doesn't do any good to get angry about it. The best advise is to just avoid those vendors products, or try and get it to work for you.

But, all this being said, I am no artist so what do I know?