DataTable and Hyperlink Column

[Tim::..]

Can someone please tell me how I create a hyperlink column in a datatable...

I have the following Sub that creates a datatable from my Active Directory
but I would like to be able to turn the email column into a link so it
automatically opens an email!

I realise I have to create a mailto: link but am not sure how you create a
link column programatically in a datatable in ASP.NET

Thanks
....CODE...

Sub BindGrid(Optional ByVal alpha As String = "")

Dim strADPath As String
strADPath = "netdomain.usembassy.dk"

Dim de As DirectoryEntry = New DirectoryEntry("LDAP://" & strADPath,
"netadmin", "N37au7h0R")
Dim src As DirectorySearcher

If alpha = "" Then
DataGrid1.AllowPaging = True
src = New
DirectorySearcher("(&(objectCategory=Person)(objec tClass=user))")
Else
DataGrid1.AllowPaging = False
src = New
DirectorySearcher("(&(objectCategory=Person)(objec tClass=user)(sn=" & alpha &
"*))")

End If

src.SearchRoot = de
src.SearchScope = SearchScope.Subtree
For Each res As SearchResult In src.FindAll
Dim dr As DataRow = ds.Tables("contacts").NewRow
dr("&nbsp;") = "<img src='../images/user.gif'>"

If res.Properties.Contains("sn") And
res.Properties.Contains("givenName") And res.Properties.Contains("Initials")
Then
dr("Name") = CStr(res.Properties("givenName")(0)) & ", " &
CStr(res.Properties("sn")(0)) & " " & CStr(res.Properties("Initials")(0))
Else
dr("Name") = ""
End If

If res.Properties.Contains("physicalDeliveryOfficeNam e") Then
dr("Dept.") =
CStr(res.Properties("physicalDeliveryOfficeName")( 0))
Else
dr("Dept.") = ""
End If

If res.Properties.Contains("telephoneNumber") Then
Dim TeleNumber As String =
CStr(res.Properties("telephoneNumber")(0))
dr("Ext") = "#" & Right(TeleNumber, Len(TeleNumber) -
InStr(TeleNumber, "1"))
Else
dr("Ext") = ""
End If

If res.Properties.Contains("mail") Then
dr("Email") = CStr(res.Properties("mail")(0))
Else
dr("Email") = ""
End If

ds.Tables("contacts").Rows.Add(dr)

Next
' Binds Contact data from Active Directory to DataGrid
DataGrid1.DataSource = ds.Tables("contacts")
DataGrid1.DataBind()
End Sub