VSTO Word Headers!

[T HOWE]

I am generating reports that require headers so I am setting up the headers
per http://msdn2.microsoft.com/library/ms178795.aspx.

I generate a string that contains my header data:

String strTest = “This is my Header�;

I then use the procedure shown in
http://msdn2.microsoft.com/library/ms178795.aspx to apply the header to the
document

foreach (Microsoft.Offi ce.Interop.Word .Section wordSection in oDoc.Sections)
{
wordSection.Hea ders[Word.WdHeaderFo oterIndex.wdHea derFooterPrimar y]
.Range.Paragrap hFormat.Alignme nt = Word.WdParagrap hAlignment.
wdAlignParagrap hLeft;
wordSection.Hea ders[Word.WdHeaderFo oterIndex.wdHea derFooterPrimar y]
.Range.Text = strTest;
}

The question I have revolves around selecting text in the header. If I
wanted to change the header to be:

This is my Header

How would I go about selecting the words “is my� for bolding? I know that
for a document I can chose a range(ref ostart,ref ostop) and range.select()
to select the text that I want. But range(ref ostart,ref ostop) does not
seem to be available to me in
wordSection.Hea ders[Word.WdHeaderFo oterIndex.wdHea derFooterPrimar y]. There
is a Range.SetRange( int start,int stop) but after I use this command and then
a Range.Select() the entire header has been selected. Any help would be
appreciated.