Change AD User Display name

Hi All,
i want to update the Display Name of a user. but it does not changes. may i know how can i do this in powershell. i remember of a video of Ashley where he changed this from 4 to 5 places in AD. Any help???

Get-Help Set-ADUser

This was just discussed here. The DN\CN is referenced in many places for the AD object, so you can break things renaming it. Check the thread out.

Thanks Rob,
Rename-AdObject worked for me.