highlight search phrase in dreamwaever mx 2004

Code
Hi 
Can anyone help solve this problem, 
When I enter the variable into the datagrid, 
all the <%=HighlightWord%> are the same even through the rest of the 
results change correctly. i.e title and pageurl change for each record,
but the "><%=HighlightWord%> is the same for each. 
Can anyone help solve this problem. 
Below is the code: 

********* dataset Code****************
<MM:DataSet
runat="Server"
id="spQueryResults"
IsStoredProcedure="true"
CreateDataSet="true"
ConnectionString='<%#
System.Configuration.ConfigurationSettings.AppSettings["MM_CONNECTION_STRING_*********"]
%>'
DatabaseType='<%# System.Configuration.ConfigurationSettings.AppSettings["MM_CONNECTION_DATABASETYPE_*********"]
%>'
CommandText="dbo.sp_TDQueryResults"
FailureURL='<%# "../error.htm" %>' PageSize="10"
>
  <Parameters>
    <Parameter  Name="@RETURN_VALUE"   Type="Int"   Direction="ReturnValue" />
    <Parameter  Name="@SearchPhrase"  Value='<%#
((Request.QueryString["TxtQuery"] != null) &&
(Request.QueryString["TxtQuery"].Length > 0)) ?
Request.QueryString["TxtQuery"] : "" %>'  Type="VarChar"  Size="100" 
Direction="Input" />
  </Parameters>
</MM:DataSet>

*****************Body Code*****************

void Page_Load(Object Src, EventArgs E) 
{ inputString = Request.QueryString["TxtQuery"]; 
string[] words = GetQueryStringToArray(Request.QueryString["TxtQuery"].ToString())
;
Word1 = words[0]; 
Word2 = words[1]; 
Word3 = words[2]; 
Word4 = words[3]; 
Word5 = words[4]; 
Word6 = words[5]; 
HighlightWord = spQueryResults.FieldValue("PageDescription", null); 
HighlightWord = Regex.Replace(HighlightWord, Word1, ""+Word1+"",
RegexOptions.IgnoreCase);
HighlightWord = Regex.Replace(HighlightWord, Word2, ""+Word2+"",
RegexOptions.IgnoreCase);
} public string[] GetQueryStringToArray(string inputString) 
{ 
string[] finalSetOfWords = new string[6]; char[] separators = {' '};
string[] words = inputString.Split(separators);
for ( int i=0; i < 6; i++) { if(words.Length > i && inputString.Trim().Length > 0) 
{
finalSetOfWords = words; 
} 
else 
{ finalSetOfWords = "NNN"; 
}
} return finalSetOfWords; } 

Datadrid details 

<Columns> <asp:TemplateColumn runat="server"> 
<itemtemplate> 
<span class="QuCssResultsTitle"><%#
spQueryResults.FieldValue("PageTitle", Container) %></span>
<span class="QuCssResultsBody"><%=HighlightWord%></span>
<span class="QuCssResultsURL"><%# spQueryResults.FieldValue("PageURL",
Container) %></span>
</itemtemplate></asp:TemplateColumn> </columns> 


George