Velocity Reviews - delete button and variable in NavigateUrl in VS2005

Hi,
I have create a data grid view with delete button in VS 2005. so far I
have able to display the data from database, howvever, there are two
issues 1)I do not know how to call the delete command. 2), In my data
grid,<asp:HyperLinkField DataTextField="UserName" HeaderText="View
Website" NavigateUrl="http://www.msn.org/" & text.UserName & ""
Target="_blank">, it doesn't work, I want that url
has the username as variable, anyone can help me out, thanks in
advance. below is my code,

<%@ Page Language="VB" Debug="true" %>

<script language="VB" runat="server" >
Sub Page_Load(ByVal Source As Object, ByVal E As EventArgs)

If Not Page.IsPostBack Then
End If

End Sub

Sub GridView1_RowCommand(ByVal sender As Object, ByVal e As
System.Web.UI.WebControls.GridViewCommandEventArgs ) Handles
GridView1.RowCommand

Dim RecordID As Button

Dim myConnection As String =
ConfigurationManager.ConnectionStrings("Connection String").ConnectionString
Dim strSQL As String = "DELETE FROM eMints WHERE RecordID = " &
RecordID & ""
Response.Write(strSQL)
Dim Connection As New
Data.SqlClient.SqlConnection(myConnection)
Dim myCommand As New Data.SqlClient.SqlCommand(strSQL,
Connection)
Connection.Open()
myCommand.ExecuteNonQuery()
Connection.Close()

End Sub

</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>eMint Admin</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [RecordID], [LastName], [FirstName],
[Location], [Phone], [Status], [UserName] FROM [eMints] ORDER BY
[LastName]">
</asp:SqlDataSource>

</div>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="RecordID"
DataSourceID="SqlDataSource1" Font-Names="Arial">
<Columns>
<asp:BoundField DataField="RecordID"
HeaderText="RecordID" InsertVisible="False"
ReadOnly="True" SortExpression="RecordID"
Visible="False" />
<asp:BoundField DataField="LastName"
HeaderText="LastName" SortExpression="LastName" />
<asp:BoundField DataField="FirstName"
HeaderText="FirstName" SortExpression="FirstName" />
<asp:BoundField DataField="Location"
HeaderText="Location" SortExpression="Location" />
<asp:BoundField DataField="Phone" HeaderText="Phone"
SortExpression="Phone" />
<asp:BoundField DataField="Status" HeaderText="Status"
SortExpression="Status" />
<asp:BoundField DataField="UserName"
HeaderText="UserName" SortExpression="UserName" />
<asp:HyperLinkField DataTextField="UserName"
HeaderText="View Website" NavigateUrl="http://www.msn.org/" &
text.UserName & ""
Target="_blank">
<HeaderStyle Font-Underline="True" ForeColor="Blue"
/>
</asp:HyperLinkField>
<asp:CommandField ButtonType="Button"
HeaderText="Remove User" ShowDeleteButton="True">
<HeaderStyle Font-Names="Arial" Font-Size="Medium"
Font-Underline="True" ForeColor="Blue" />
<ItemStyle ForeColor="White" />
<ControlStyle ForeColor="Red" />
</asp:CommandField>
</Columns>
<RowStyle Font-Size="Smaller" />
<EditRowStyle BackColor="White" ForeColor="White" />
<HeaderStyle Font-Size="Medium" />
<AlternatingRowStyle BackColor="#FFFFC0" />
</asp:GridView>
</form>
</body>
</html>