Peer-to-Peer Outlook

Greetings,

I have been tasked by a client to set up Outlook on their peer-to-peer network. Installation and use on individual workstations is no problem but the difficulty arises when they want to be able to share contacts, calendars, etc. There is no collaborative foundation (such as Exchange) in order to facilitate this easily. I know it can be done but am not sure how. My research has turned up very little. Can anyone help with experience and/or knowledge?

Thanks,

CrownBass