im having a problem with shopping cart. please help me.

my shoppingccart3.asp contains:

<%do while not oRS.EOF %>

<tr><td><%response.Write ("<img width='40' height='40' src=" & oRS("product_img"))%></td>

<td><%response.Write oRS("product_short")%></td>

<td><%=FormatCurrency(oRS.fields("unit_price"), 2)%></td>

<td><center><input type="text" name="strquantity" size="4"
maxlength="4" value="<%=oRS("cartQuantity")%>"></td>

<td><input type="image" value="button" type="submit" src="pic/delete.jpg"></td></tr>

<tr><td><br/></td></tr>
</tr>

<%oRS.MoveNext
 loop%>

and after submiting, it should update the quantities by going to updatequantity.asp:

 <%do while not oRS.EOF

   session("sessupdateq") = request.form("strquantity")
   oRS ("cartQuantity") = session("sessupdateq")
   oRS.Update%>
   <%=oRS("cartQuantity")%>
   <%oRS.MoveNext
   loop%>

but i'm having a problem as each of the update quantity field will have every quantities from each of the fields...

please help! thanks.