Hi Maya,
there just popped up the following idea...
use the crosstab and make it selectable. Then overlay the rows you do not want to be selectable wirth a transparent image, this should catch away the selection of the row.
Dont have a system right now to test, but might work. But only if you know exactly where to position the images ;-) so I would not to it in a dynamic filled crosstab ;-)
Dirk