Have you seen the Excel thread here http://forums.ni.com/ni/board/message?board.id=BreakPoint&message.id=2391. There is a lot on information there if you want to use ActiveX to fetch your data.
However your excel file format is pretty simple. Do you really need to use ActiveX. An easier method is to convert the excel file into a tab-delimited text file (in Excel use menu File - Save As). This will allow you to use the labview native File I/O VIs.
Example and data file attached
David
