In my code behind I have this in the page load: 

DotNetNuke.Services.Localization.Localization.LocalizeGridView(gvEquipList, "ResourceFile")

Here is what I have in the .ascx file:

<asp:

GridView ID="gvEquipList" runat="server" Width="100%" AutoGenerateColumns="False"
BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="0px"
CellPadding="4" ForeColor="Black" GridLines="Vertical" AllowSorting="True"
DataKeyNames="Tag" DataSourceID="objTagList" > 
 <FooterStyle BackColor="#CCCC99" />
<RowStyle BackColor="#CCCCCC" />
<Columns>
<asp:HyperLinkField DataTextField="Tag" HeaderText="Tag" SortExpression="Tag"
NavigateUrl="~/Tasks/Equipment/Detail.aspx"
DataNavigateUrlformatString="~/Tasks/Equipment/Detail.aspx?tag={0}"
DataNavigateUrlFields="Tag" DataTextformatString="{0}" />

<asp:BoundField DataField="Mfg" HeaderText="Mfg" SortExpression="Mfg" >
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>

etc, etc, etc.

By rights this should work but what is the value of Me.LocalResourceFile?  I think this is where I am falling short?  By the way, wouldn't my .resx file be XXXXX.HeaderText vs. XXXXX.Header?

Still confused as to where Me.LocalResourceFile comes from.  Is this a property I have to add or is this a property I need to reference in a DNN dll?  When I add it in my code I get an error stating "LocalResourceFile is not a member of MyApp.EquipList"