Is there a way for me to put a " [?] " link or image-link next to the Attribute names, so that when a customer clicks on the link, a pop-up comes up describing the different attribute options?
As open source - - most anything is possible, it just becomes a decision on how much time, energy and $ - that you are ready to invest against the return you will receive for this
Where will you add this description?
If in the admin, then code for the page to enter needs to be written
Where will you store the text entered?
The DB is the best option - but there is no table/record defined for this and will have to be created
Code will need to link a description entered with an attribute
Then there is code to be written for the customer side display
How good are your mysql/php skills?