Following its launch last month, <A HREF="http://www.myVcard.com ">myVcard.com</A> Thursday enhanced its group calendar function to complement its contact management and address book update features. The free Web-based service enables consumers to create and manage calendars for an unlimited number of groups and events without requiring the user to log in separately for each group. In addition, all the events for all the groups a user belongs to, plus their personal events, are consolidated into a single, editable, calendar.