From: Victor Delta on
"GARY" <gcotterl(a)co.riverside.ca.us> wrote in message
news:c706c527-240d-4e20-b0e1-0fc7e45e727a(a)42g2000prb.googlegroups.com...
> COL A has 800,000 cells
> COL B has 750,000 cells
>
> Here's an example of my spreadsheet:
>
> A B
> 008101966-1 008101966-1
> 008101968-3 008101968-3
> 008101969-4 008101979-3
> 008101970-4 008101968-3
> 008101979-3 008101979-3
> 008101981-4 008101981-4
> 008102023-2 008102023-2
> 008102025-4 008102025-4
> 008102028-7 008102023-2
> 008102030-8 008102025-4
> 008102313-4 008102319-0
> 008102314-5 008102368-4
> 008102319-0 008102369-5
> 008102368-4 008102402-1
> 008102369-5 008102404-3
> 008102402-1 008102417-5
> 008102404-3 008102418-6
> 008102417-5 008102437-3
> 008102418-6 008102438-4
> 008102437-3 008102443-8
> 008102438-4 008102455-9
> 008102439-5 008102464-7
> 008102443-8 008102465-8
> 008102455-9 008102466-9
> 008102464-7 008102535-8
> 008102465-8 008102548-0
> 008102466-9 008102561-1
> 008102482-3 008102562-2
> 008102485-6
> 008102535-8
> 008102548-0
>
> In Excel 2007, I how do I find the cells in COL B that do NOT match
> the cells in COL A?

I'd use conditional formatting. Select a cell in column B, say B2, and set
conditional formatting so that say it has a red background (pattern) if it
does not equal A2. Then copy the formatting of B2 to the whole B column
using the format painter (click on the column head).

V