[Lion of High Park]

Does anyone out there know how to set up a starting homeworld with different conditions than the racial traits of a given race? For example, starting off a race of oxygen breathers on a small rock planet without an atmosphere. The logic in this is to build in a severe starting restriction for a player, and to prompt the race into immediate expansion to have any hope of surviving. (Not to mention, it would tie in very nicely with a Space 1999 shipset I'm toying with.)