How Can I Customize Setup Config

[Jeremy of Many]

I have a store bought copy of Doom 3 and I was wondering if anyone could tell me:
- How to make it so the game already knew the CD-Key upon running setup so you don't have to type it in.

- How to make it so the setup didn't ask you if you wanted to install DirectX or view the ReadMe?

Any advanced configurations like that?

Thanks,
Jeremy