Sorry guys, I'm obviously not being very clear, so my apologies. I know how the set the boxes to checked.
I was trying to make an advanced settings window, with a single checkbox to enable. Then a bunch of radio controls, that I was hoping to "grey out" to make read only, unless the checkbox was enabled.
As far as I can tell from the documentation its not possible, so no need to worry about it. I can do a script without... it was purely a matter of asthetics and so, doesn't matter in the least. Cheers anyways.
Matty: Thanks, but it really didn't seem worthwhile enough to bother you further. I'm sure you've got other important things, so no need to worry about relatively pointless things. Much appreciated though man.