It looks like the only thing you require is how to setup the TOC field. You haven't told us the styles you are using for the headings before the chapters so I'll make a guess and call it 'Title'. In that case, the TOC field entry would be something along the lines of...
{TOC \t "Heading 1,1,Heading 2,2,Heading 3,3,Title,1"}

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Andrew Lockton
Chrysalis Design, Melbourne Australia