I would say your data is Text.
Format all to General.
Copy an empty cell.
Select the range to change and paste specialaddokesc.
Now try the sort.
Gord Dibben MS Excel MVP
On Thu, 3 Jun 2010 06:22:11 -0700, EngrJohn
I have a large (800 rows X 20 columns) data sheet that I am trying to sort by
numbers in column C. These numbers are from 7 to 9 digits in length. When I
try to sort the sheet, Excel uses the left-most digit in this column across
to right to sort. Nine digit no.'s beginning with 1 end up at the top and
further down 7 digit numbers beginning with a 6 are included. When I
recieved this data sheet this column was labled as General and I tried to
change it to number. Any suggestions?