Okay so i want to develop I have OS X Leopard
I also have UBUNTU 7.10 64bit

I have a few questions:

1) The guide here tells you how to decrypt 1.1.1, but i want to develop for
1.1.4, don't i have to decrypt 1.1.4 to do so?

2) How do i decrypt 1.1.4?

3) Is it easier to develop on linux or on OSX?

4) Can i even develop with 64bit UBUNTU?

Thanks for any help you guys can provide in advance.
If i think up any more questions I'll ask them here.