Hi Guys

I am pursuing something which I dont even know is possible - just help me out please.

I have a listbox control whose style is set to Checkbox.
I am populating this listbox with about 10 elements, all set to true (checked)
Out of these 10 elements a couple of them I dont want the user to uncheck them any time - and hence want these few items to appear 'grey' (as disabled).
I did find a way out of doing this programatically that is checking these certain elements everytime they are unchecked - but the requirment here is that they should be 'greyed' instead.

Thanks in advance

Suhaib