How can i share my outlook 2007 calender with multiple users

In Calendar, in the Navigation Pane (Navigation Pane: The column on the left side of the Outlook window that includes panes such as Shortcuts or Mail and the shortcuts or folders within each pane. Click a folder to show the items in the folder.), click Share My Calendar.

Do one of the following:

1. In the Name box, click Default.
2. Under Permissions, in the Permission Level list, click the permission level that you want.For details about permission levels, see Outlook folder permissions.
   You can create custom permissions by selecting the check boxes and options under Permissions.
   

Close outlook and search for *.SRS files once you find the files delete it open Outlook

srs files are for sending and recieving mails in Outlook

I've had a few clients with this issue. I have used these steps from RIM. Try it and see if it helps.

Here’s what you need to do:
1. Uninstall Desktop Manager
2. Remove any references on your registry and on your C drive program files and users to:
a. Blackberry
b. Pumatech
c. Research in Motion
d. RIM
e. Desktop Manager
3. Disable the UAC (User Accounts) on Control Panel-Users
4. Get a command prompt and type regsvr32 atl.dll (enter)
5. Reboot
6. Make sure that when you re-install you have absolutely no SpyBot, Virus, Spam guard or the like running.
7. Reinstall Desktop Manager (version 4.2 SP2)
8. If you get an “Error 1904….Lotus Notes…” Ignore it
9. After you do all this, it should work

First off, please don't give me a bad rating, as I don't have Vista, and this is simply a guess..

Secondly, Look around in the settings in WDMC, maybe there is a setting to copy contacts on device onto outlook on the PC. Don't bother looking in outlook since the device usually sync with Activesync/WDMC, which does the rest it self.

In itunes go to syncing options and make sure contacts and calender are selected! then resync! hope this helps! Merry christmas!

inbox is must in any outlook profile, but you can setup calender for example to be default at MS outlook startup. go to
tools-->options-->other-->advanced options-->
look for start up in this folder field-->Browse
then choose your folder(calender or contacts) .

all the best

Is there not an Accept button available in the email received? Are the senders using MS Outlook as well?

Chapura PocketMirror Pro has a multiple Calendar feature that might help you.