Hi Renderosity Gang!

I am using Carrara 6 Pro and am finding the Boolean function almost useless. I used it a lot in Carrara Studio for sculpting out negative shapes. I could punch an entire line of portholes in the side of a ship at one go. NOW it doesn't work,

So, what do I need to do to make it work?

OR,

Is there another way to punch holes or do negative sculpting that I don't know of?

Thanks,

vernonglen