66 years old. I have been asked to record daily my weight and blood-sugar count. I am using Excel 2003 on a Vista machine. I am trying to compare monthly averages between doctor visits. I have both columns formatted as 'number' (select column>format>cells>number, 2dp) yet when I try to sum or average the numbers, the formula only includes the most recent 3 cells. And, when formatting, it does not add the 1 or 2 decimal zeros to most of the numbers in the columns. I have selected the entire spreadsheet and made sure the protection "lock" is not selected. I hope I explain myself well enough for someone to help - I am certainly no whiz at this. Thanks in advance for all help. Tony Vella Ottawa, Ontario, Canada.