Well as far as launching a web browser to the store, that function is in poser, under the help menu. Weblinks. I'm pretty sure most people never even realized that you can delete that folder in your runtime to get rid of them, or if wanted take a look at one and make a new one for Renderosity, etc.

Example a txt file renamed as Renderosity - New Poser products.pzs with the contents https://www.renderosity.com/mod/bcs/?br=new&software_family=poser .. will show up in the help menu and launch to new poser products in a browser.

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Consider me insane if you wish, but is your reality any better?