add image ( buy) on full resulution page

hi
i installed gallery2 with checkout and everthing workes fine, the only thing is that i dont find the option to add the "add photo to card" ( sorry dont know the exactly name, in german its:"photo dem warenkorb hinzufügen" )
for big sized images sites ( the site i come to when i click on the image thumbnail ).
-> i want the users to allow to add pictures to the shopping basket from that site
thanks in advance
marc

/edit
now it works
sorry my fault