So you're entering the data manually eh? Just do as I say above and type in times as "5:45" and "12:37". Should work fine. If you would like some help developing your sheet, let me know. I think this is the most logical way to do it.

I have Excel 2010 so you should be able to open my docs. It seems to me that maybe you're not downloading it correctly. Have you checked your download folder?