Disable multiple office communicator accounts

Hi All,

I have requirement for my client.

We are using Microsoft office communicator server R2 in our organization. Is there any script of PowerShell commend to disable/enable multiple user account on the server. Every month some of the users are leaving and joining the company. So when users are leaving the company, we need to disable the account manual on the server which always time consuming. I would like to automat this to disable through script or command 

Regards,

Avi