Trying to Match information on two different worksheets and populate a
cell if a match is found

Worksheet A,
Column A=Server names
Worksheet B,
Column A=Server names
Column D=Need Formula that looks in Worksheet A, Column A and looks
for a match for the Server name that is in Worksheet B, Column A, Row
I'm in. if match found put in Server name.

how can I do this

thanks
Rick