I tried that.
Though the month bar and the date bar display those dates the main data box will only go back as far as 4 SDep 2008.
You can enter in past data back through November 2006. In order to go back in time, use the slider/scroll bar above the tracker. Just grab the slider and move it back March 2008 and August 2008 to enter the data. Please let us know if you have any further issues.
Thanks,
MedHelp