how can i add a shared exchange calendar to my iphone

Hello,

We are on an Exchange 2010 email server, use Outlook 2010 clients and corporate policy does not allow for use of the iCloud environment due to the nature of our business. We would like to be able to add shared calendars to our iPhones but so far have been unsuccessful. We are a windows shop and currently only have one Mac in the organization; and that Mac isn't on the domain. Can this bee done, if so can someone please point me in the right direction.. Any help or advice is greatly appreciated even if it's just to say that it can't be done.

Thanks again,

J