MS Outlook Calendar Delegate

[khourych]

I am trying to add a co-worker as a delegate to my calendar. Every time I add him and give him the appropriate permissions, I click appy then okay, he receives an e-mail but he can't access my calendar. When i revisit the delegate screen and highlight his name and click permissions it indicates none. This happens almost immediately We're both using Outlook 2003 and we have an Exchange 2000 server. Help