Company Holiday List in all users’ calendar through server

Dear All,

We are using exchange 2003 SP2 and exchange 2010 Sp1 in co-existing environment. Our client has a one requirement to add company holiday list into client’s calendar through server.

Users are using Outlook 2003, 2007 and 2010 client version. Is it possible?

Please help.

Regards,'

Manjeet Singh