Calendar or contact sharing

Hi
I want to use Davical / CalDAV for calendar sharing and LDAP for contact list sharing. I find bits and pieces on the net about it. I am running WAMP server with Apache, MySQL and PHP on Windows server 2008.
I am currently running Hmailserver to provide me with an IMAP solution but it can???t do Calendar or contact sharing. Do any of you know how I can run the above on Windows? Or a virtual machine? Or another solution to do Contact and calendar sharing. I don???t want to use Google sync and WebDAV you can???t edit publish calendars.
Thanks