Advice Needed from All You Uber Modders

[Arremis]

I know squat about XML. I've played with UI Builder. I am wanting to create my own UI. What advice would you Uber Modders out there have for someone like me?

Do I need to learn everything about XML coding before I bother to start, or can it be done without knowing anything about XML?

Do I have to use UI Builder, or is there a more competent program out there that does the same thing?

Do I need to use any kind of UI Builder, or can I code in XML only?

What are some of the programs that you Uber Modders use for tweaking and stuff?

Where do I start?

Enquiring Noob Modders (ME ME ME!) want to know

Arre