Saving Data To Another Table

Hi
I’m making a very primitive shopping cart. I’ve created a table containing a list of products and using an SQLdataSource with a GridView I’ve got the products displayed – simple.
What I now need is to add a button with an Insert command, but the SQL needs to add a row of data to a different table – tblShoppingBasket. I’ve tried adding in the insert command and changing the SQL but it doesn’t add a new record, although is also doesn’t through and error.
The second part of the problem is need to pass the productID from the row they selected (pressed the button that triggered the insert command) and add this to the shoppingBasket table via the insert SQL.
I’d really be grateful for any help (code below).
Thanks
Richard

<asp:SqlDataSource ID="SqlDataSource_GenralProducts" runat="server" ConnectionString="<%$ ConnectionStrings:AquilaConnectionString %>"

SelectCommand="SELECT * FROM [tblProducts] WHERE ([productAgeGroup] = @productAgeGroup)"

InsertCommand="INSERT INTO [tblShoppingBasket] ([userID], [productID]) VALUES (@userID, @productID)">

<SelectParameters>

<asp:Parameter DefaultValue="3" Name="productAgeGroup" Type="Int32" />

</SelectParameters>

<InsertParameters>

<asp:Parameter Name="userID" Type="Object" DefaultValue="123"/>

<asp:Parameter Name="productID" Type="Int32" />

</InsertParameters>

</asp:SqlDataSource>

<asp:GridView ID="GridView3" runat="server" AutoGenerateColumns="False" DataKeyNames="productsID"

DataSourceID="SqlDataSource_GenralProducts">

<Columns>

<asp:ImageField DataImageUrlField="productThumbNail" DataImageUrlFormatString="../images/shop/thumbNails/{0}">

</asp:ImageField>

<asp:BoundField DataField="productLabel" HeaderText="Product:" SortExpression="productLabel" />

<asp:BoundField DataField="productDescription" HeaderText="Description:" SortExpression="productDescription" />

<asp:BoundField DataField="productCost" HeaderText="Cost:" SortExpression="productCost" />

<asp:ButtonField ButtonType="Button" CommandName="insert" Text="Add to Shopping Basket" />

</Columns>

</asp:GridView>