Nautilus extensions

["Harkos" <harkos bol com br>]

Hi,

I'm a developer who is beginning with a project where we need to extend Nautilus in a certain way. We need to mask an entire folder to behave as a file (it's own icon, changing double-click behavior, etc.), just like on MacOS X. Can it be done? How? To what extent can it be applied?

Thanks in advance,
Leonardo