New Post: iterate through like items

HTML I'm scraping is below. It contains a post and 2 replies:

<div class="share_buttons noprint">...</div>

<strong>Dan</strong> Says:<br/>
<span class="small soft"><time datetime="2009-10-05T02:27:38Z">Sun, Oct 04 '09, 7:27 PM</time></span>
<div class="quote_top">&nbsp;</div>
<div class="quote_item">Hello all, this is my original post.<br/></div>

<form class="action_heading noprint">
<strong>Page</strong> 
...
</form>

<div class="post_number" id="r_140626">1</div>
<strong>AnnieMae</strong> Says:<br/>
<span class="small soft"><time datetime="2009-10-05T02:30:27Z">Sun, Oct 04 '09, 7:30 PM</time></span>
<div class="quote_top clear_float">&nbsp;</div>
<div class="quote_item">What do you think of it?<br/></div>

<div class="post_number" id="r_140627">2</div>
<strong>Thomas77</strong> Says:<br/>
<span class="small soft"><time datetime="2009-10-05T02:32:32Z">Sun, Oct 04 '09, 7:32 PM</time></span>
<div class="quote_top clear_float">&nbsp;</div>
<div class="quote_item">Not really sure, can't see this pic?<br/>
</div>

So I've already figured out how to get the original post...

'get AUTHOR and DATE of original post
Dim divOriginalPostAuthor As HtmlNode = threadDoc.DocumentNode.SelectSingleNode("//div[@class='share_buttons noprint']/following-sibling::strong")
Dim divOriginalPostDate As HtmlNode = threadDoc.DocumentNode.SelectSingleNode("//div[@class='share_buttons noprint']/following-sibling::span/time")

Dim strDate As String = divOriginalPostDate.InnerText.Trim
strDate = strDate.Remove(0, InStr(strDate, ", ")).Trim
strDate = Replace(strDate, "'", 20)
Dim strAuthor As String = (divOriginalPostAuthor.InnerText).Trim
dtPosted = CDate(strDate)
divOriginalPostText = threadDoc.DocumentNode.SelectSingleNode("//div[@class='share_buttons noprint']/following-sibling::div[@class='quote_item']")

Now I'm just trying to figure out how to get the replies...I was thinking of getting the current line position like this:

Dim currentNodePosition As Integer = threadDoc.DocumentNode.SelectSingleNode("//form[@class='action_heading noprint']").Line

and then using that to iterate through the replies as I increment the current line position. The think that makes this tricky for me is that the replies don't have a "container" html element for me to collect at once.... Any ideas?