[Suicide Junkie]

If you want to make a shipset, what you need to do is:

go to pictures/races
Create a new directory, and make the name a unique, short Version of your race name.
Create a set of portrait and mini graphics; look at some other race to see the size and filenames.
You will need to change the filenames so that the beginning matches your directory name exactly.

If you are putting them in pictures/races/mynewrace, the filenames should be mynewrace_(insert portrait/mini and objectname).bmp

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If you want to make an AI for your shipset, then you'll want advice from an AI guru.
For starters, though, just duplicate the AI files form some other race, adjust the filenames as required to match your directory name, and then tweak things.
If you have specific technical questions, post 'em here and somebody will answer them in no time at all.