Window Server Standard Edition

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C#

MS-Excel

string

connection

I am reading records from a 2010 Excel spreadsheet via my web application using the following connection string on my developer machine which has Window 7 installed (32-bit):
...OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Server.MapPath((string)this.ViewState["workfile"]) + ";Extended Properties=\"Excel 8.0;Xml;HDR=NO\"");
All the while, on my Server which has 32 bit Window Server 2008 Standard edition installed, I have to use this old connection string, provided that I have to convert my 2010 excel file to Excel 97- 2003 workbook.
....OleDbConnection conn = new OleDbConnection((string.Concat(new object[] { "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=", base.Server.MapPath((string)this.ViewState["workfile"]), ";Extended Properties=", '"', "Excel 8.0;HDR=NO", '"' })));

On the server I CANNOT READ ANY RECORD AT ALL. And when I used the newer connection string (the first one above) on the server, I am getting this error message:The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
What am I doing wrong???