On a sheet called orderdata i have values indexed by there order id this is
in a form of 10001 or 10002 etc. I need a way of going through each row with
the same order id as im displaying them on a invoice. An example of the data
on the sheet is

ID , Description, quantity

10001, An example, 2
10001, An example2, 3
10002,... etc

For each row i need to find out the row that the data is on so i can gain
the decription and quantity from the script.

Thanks for any help

Jamie