NCX Table of Contents Creation

I'm looking for an experienced freelancer to create a NCX (Navigation Control XML) Table of Contents for my manuscript, which is already in Word format and published as a paperback on Amazon.

Requirements:
- Chapter-based navigation format
- Flexibility on including sub-chapters or sections

Ideal Skills and Experience:
- Expertise in NCX and ebook formatting
- Proficiency in Microsoft Word
- Attention to detail and organization