Only SuperMembers can see bigger sized attachment pictures

[hartiberlin]

Hi,
I have a question  how to do this:

I want to have paying members of a SMF forum
to be able to get bigger sized picture attachments
to view,
but the normal nonpaying user will get
only to see the small sized thumbnail pictures.


When I post a new message with a smaller thumbnail
picture, only the paying member should see the bigger
picture or get an additional link to a bigger picture download.

How could this be implemented best ?

Would it be possible to have an addtional link per posting
which will only be seen by SuperMembers, who are in the
"paying group" permission ?

Normal mebers should only see the small thumbnail size picture
attachment , so they would like to register and be a paying member.

How could this be best implemented ?
Or should I add boards, which are only accessible by
paying members ?
But then, how do I copy the text above the picture best
to this other board ?
Or could I have 2 same boards with the same text content,
but only have different picture size attachments ?

What are here the best options to set something like this up
via SMF ?

Thanks.

Regards, Stefan.