ok say I have this:

Code:
<html>
<body>

<%
set conn=Server.CreateObject("ADODB.Connecti...
conn.Provider="Microsoft.Jet.OLEDB.4.0...
conn.Open(Server.Mappath("/db/northwin...

set rs=Server.CreateObject("ADODB.recordset"...
sql="SELECT DISTINCT Country FROM Customers ORDER BY Country"
rs.Open sql,conn

country=request.form("country")

%>

<form method="post">
Choose Country <select name="country">
<% do until rs.EOF
response.write("<option")
if rs.fields("country")=country then
response.write(" selected")
end if
response.write(">")
response.write(rs.fields("Country"))
rs.MoveNext
loop
rs.Close
set rs=Nothing %>
</select>
<input type="submit" value="Show customers">
</form>

<%
if country<>"" then
sql="SELECT Companyname,Contactname,Country FROM Customers WHERE country='" & country & "'"
set rs=Server.CreateObject("ADODB.Recordset"...
rs.Open sql,conn
%>
<table width="100%" cellspacing="0" cellpadding="2" border="1">
<tr>
<th>Companyname</th>
<th>Contactname</th>
<th>Country</th>
</tr>
<%
do until rs.EOF
response.write("<tr>")
response.write("<td>" & rs.fields("companyname") & "</td>")
response.write("<td>" & rs.fields("contactname") & "</td>")
response.write("<td>" & rs.fields("country") & "</td>")
response.write("</tr>")
rs.MoveNext
loop
rs.close
conn.Close
set rs=Nothing
set conn=Nothing%>
</table>
<% end if %>

</body>
</html>
This code only allow to choose by country but how do make it so that the user must choose a country, then a state, then make a choice between either an address or address+phone number before they can submit?
I also was looking around and saw something for a POSTBACK but how can I implement this in the code?