Attached Link: http://www.renderosity.com/news.php?viewStory=13759

> Quote - Is there a tutorial somewhere that can show me how to upload my product to the store i found it really hard.

See the attached link for the "Product Submission Guidelines".

Uploading to the store is only the first step, the product will be reviewed and tested before actually appearing (assuming it's accepted, which isn't guaranteed).
The message you're seeing is due to restrictions Renderosity place on new vendors.