VS 2008 Indent Dropdownlist Text Based On Ddl Value

I found a good article online and am able to read data from an excel file. The excel file I created has two columns which I am populating column A as the dropdownlist text value and column B is the dropdownlist value Here is my code:

page.aspx
HTML Code:
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="ddlFund" runat="server" />
</div>
</form>
page.aspx.vb

Code:

Imports System.Data
Imports System.Data.OleDb
Partial Class read_excel
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim myDataSet As New DataSet()
Dim sXLSfile As String = Server.MapPath("/xls/class-list.xls")
Dim strConn As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & sXLSfile & ";" & _
"Extended Properties=""Excel 8.0;"""
''You must use the $ after the object you reference in the spreadsheet
Dim myData As New OleDbDataAdapter("SELECT * FROM [Fund Project List$]", strConn)
myData.TableMappings.Add("Table", "ExcelFile")
myData.Fill(myDataSet)
ddlFund.DataSource = myDataSet.Tables(0).DefaultView
ddlFund.DataTextField = "group"
ddlFund.DataValueField = "groupval"
ddlFund.DataBind()
End Sub
End Class

the excel file looks something like so (<blank> means no data in cell):

Row 1: group | groupval
Row 2: ITEMS | <blank>
Row 3: Blankets | Blankets
Row 4: Beds | Beds
Row 5: STAFF | <blank>
Row 6: John Doe | John Doe

Currently my dropdown gets populated and it's text listing shows up but I want all the items that do not have a value that is blank to be indented. Anyone know if this can be done? How about if I bold just the text that has a blank value?