checkboxes and lists

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hi all
suppose I have following situation:
I have a list of items that will be rendered in the view using the 
datatable component so I can select them individiually. The thing is 
that I also would like to insert a checkbox in a column for each row in 
order to be able to get the selected items as another list.
I know I could use the selectManyCheckbox component. But in this case, I 
wouldn't be able to get the items individually using the DataModel 
object used to fill the table...
any ideas?

thanks in advance