When you try and open an Office 2007/2010 file that has been saved in the new format you will not be able to open it unless you have the Microsoft Compatibility Pack Installed, this is a free update and should be installed on your computer, this can be downloaded from Microsoft http://www.microsoft.com/download/en/details.aspx?displaylang=en&am...

If you have any problems installing this or require any further assistance with this then please contact our Support line on 020 3004 2050 and one of our engineers will be able to assist you.