need help with mod membership add to cart
 

I would like my site to be able to hide the add to cart button for some categories for users who are not on the membership level I call "professional". I still want all users to be able to see all items, but not to be able to purchase them unless they are logged in as "professional". It would be great if I could also have a message where the button was that says something like "log in as a professional to be able to purchase this product". If there are any coders out there please reply or PM me with a quote on getting this done. Or if there is a way to do it myself, let me know! Thanks!