How do I set the conversion settings for Word to ignore outline autonumbering for headings?

To clarify:

I have my paragraphs in Word set up with the required numbering properties using Word's Style settings. In Word, I want the headings to be numbered 1.0, 1.1, 1.1.1, etc. because the intent is for the reader to read through the manual like a book - from start to finish.

I'm single-sourcing my manual from Word into RoboHelp to generate an online help package. However, I do not want my RoboHelp headings to be numbered because the user may or may not read each topic in order (in other words, they may only need to read what's in section 3.2, but won't get there by reading sections 1.0 through 3.1 first). I might also clarify that each heading is its own topic - so Section 3.2 would be a separate topic from 3.0 and 3.1.

So for example, in Word, it reads like this:

     "1.0 Introduction

     [content goes here]

     1.1 System Requirements

     [content goes here]

     1.2 References

     [content goes here]"

And in RoboHelp, I want it like this

     "Introduction

     [content goes here]"

     ---[end of topic]---

     "System Requirements

     [content goes here]"

     ---[end of topic]---

     "References

     [content goes here]"

     ---[end of topic]---

Does that make sense?

So how do I keep the numbering in my Word document, but set up the Conversion Settings in RoboHelp to ignore those numbers and only include the text following the autonumber? I have been able to do this when single-sourcing a FrameMaker book into RoboHelp.