Vlookup Help Needed

Hi,
I'm hoping this is an easy solution and I'm just not thinking right today.

I need to copy data over only if a column doesn't match a specific value in column A.

My reference is Column A
Column B needs to be compared to Column A

If Column B does not match any of the values in Column A then I need it to copy it's value for B & C.

Hope that makes sense, any help would be appreciated.

Thanks!

Jason