heya; i'm pretty sure the manual says, if you got the boolean difference the wrong way round, just drag the things to a different order.... in fact, i'll look it up... yep, right here. use the world browser to change the order. page 70. maybe its a bug? actually, they go on about dragging things in and out of boolean objects, but not within them. hmm... and whats with the thing that says if you try to group things that are linked, they wont be linked any more? do you get that when you try to make a group?