How to detect an empty cells in Excel file using getRows method?

Hi. I have an annoying trouble trying to detect an empty cells in Excel file using getRows() method.
Here's the working code. It just reads an Excel file and then writes data directly to html page.
I just want to detect empty cell by value and write "EMPTY CELL" phrase instead of writing empty space.
But cell comparison to empty string ("") does not work -- :(

Can you help me to detect empty cells?

CODE: Please look for "HERE'S MY TROUBLE" string to see my trouble's area:

<%
     Set oConn = Server.CreateObject("ADODB.Connection")
     strConn = "Driver={Microsoft Excel Driver (*.xls)}; DBQ=D:\Projects\goodsdata-6.xls;"
     oConn.Open strConn

     strCmd = "SELECT * from GoodsData" ' GoodsData is named set of cells in Excel worksheet
     Set oRS = Server.CreateObject("ADODB.Recordset")
     oRS.Open strCmd, oConn

     Dim cell
     cell = oRS.GetRows ()

     Response.Write ("<table bgcolor='#778899' border='1' cellpadding='4' cellspacing='0'><tr><td>")

     For rowNum = 0 To oRS.Fields.Count
          For colNum = 0 To 10
'HERE'S MY TROUBLE:
               If cell ( colNum, rowNum ) = "" Then
                    Response.write "EMPTY CELL </td><td>"              
               Else
                    Response.write cell( colNum, rowNum ) & "</td><td>"
               End If              
          Next
          Response.write ("</td></tr><tr><td>")
     Next

     Response.Write ("</td></tr></table><p>")
%>

Maybe, I go wrong way? Thanks in advance..