A centralized calendar is a great feature to have for portals or collaboration workspaces, however, there is no default way to achieve this in WSS without a third party solution.
Gunnar Peipman has an excellent article on creating a SharePoint global calendar using site data query and calendar view control. I have slightly modified the code to allow the Global Calendar web part to query all SharePoint event list and I have added a custom field in SharePoint which will determine if the list item will display on our global calendar web part.
You can visit Gunnar Peipman’s blog to view the entire code I will list sections of the original code and modifications I have made. Read the rest of this entry »