Hide/display specific contacts

Hi all,

We use Exchange 2007 and Lync 2010. We have two contacts with similar names

1. first one is a resource Calendar account
2. Normal user Account.

I would like to

1. Hide the Resource calendar account from Lync and only visible in Outlook addressbook
2. Hide the Normal user logon account from Outlook Addressbook and visible only in Lync as this is a generic account only used for a single purpose and need not be availabe in Outlook Address book.

Can this be done? If yes,  how do I go about achieving this?

Regards Sravan http://deployment.cybertechcomputers.co.nz