PLX-DAQ.xls could be all you need. It's free and can probably be used for any data. Check at the bottom of the page
http://arduino.cc/forum/index.php/topic,132123.0.html
The code therein shows how to format the output for Arduino. Despite earlier misunderstandings, I find PLX excellent. I don't know what happened with juuka. He couldn't be bothered to respond but I guess he found PLX OK.