Excel Datasources Error

Hello everybody ;

I have been used SoapUI 4.6.3 two weeks .I prepared lots of test case for my web application.
Suddenly ı decided add datasource.(Notepad or excel ) I was able notepad (file) datasource connect to my application.However I tried connect excel file to my project.
Excel file does not connect my applciation. I see tutorial on SoapUI web page.

Note : Microsoft Office 07
SoapUI 4.6.3.

On the other hand , How to see log about notepad datasource ? (Line by line )

Thanks..See u