Hi!

I'm programmer but not very much familiar with VBA. I've situation where
I've 16000 thousands rows of data in my excel sheet. It has got many columns
but at moment i'm conerned about three of them namely system, critical spares
and marked. What I want to do is to automate the following process either by
macro or VBA code.

1) Filter all data where critical spares' value is 1. its pretty simple

2) Since there are duplicate values for system column so i want to look for
those system which repeat more than once. If I find the let say four system
each one is repeating three times. I want to be able to add 1 to the Marked
column for each row with repeated system and for all systems those are
repeated more than once.

I hope I made my point clear, its kinda urgent please repond ASAP.

regards.