Customize GridView

Microsoft has an fairly simple example of how to customize the GridView when displaying database entries. I turned off the Autogenerate columns because it automatically appends the same columns on my GridView.

I want to reformat the currency to two decimal places and the dates to date only, not time. I have yet to get to that point. But here is my code:

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" DataSourceID="SqlDataSource1" EmptyDataText="No Data Available." AutoGenerateColumns="false" PageSize="20">
     <Columns>
          <asp:BoundField DataField="Bill_Number" HeaderText="Bill Number" />
          <asp:BoundField DataField="RP" HeaderText="Responsible Party" />
          <asp:BoundField DataField="LC" HeaderText="Ledger Code" />
          <asp:BoundField DataField="Amount" HeaderText="Bill Amount" />
          <asp:BoundField DataField="DateRcvdDOL" HeaderText="Date Rcvd" />
          <asp:BoundField DataField="DatePmtSentDEC" HeaderText="Date Payment Sent to DEC" />
          <%--<asp:BoundField DataField="Comments" HeaderText="Comments" />
          <asp:BoundField DataField="DateSentRP" HeaderText="Date Sent to RP" />
          <asp:BoundField DataField="Check" HeaderText="Check Number" />
          <asp:BoundField DataField="AmountPaid" HeaderText="Amount Paid" />
     </Columns>
</asp:GridView>