how to change owner permission of resource mailbox in exchange server 2003 and how to give full mailbox rights to resource mailboxes.

http://www.petri.co.il/grant_full_mailbox_rights_on_exchange_2000_2003.htm

In Microsoft Exchange Server 2003 and in Microsoft Exchange 2000 Server, you can set mailbox rights by using the ADUC snap-in on a username that has been mailbox enabled. Right-click the user object, click Properties, click the Exchange Advanced tab, and then click Mailbox Rights. Here is more information about performing this task programmatically after you create the mailbox in the information store. http://support.microsoft.com/kb/310866 Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.