With techs in the field and people working from home a web-based calendar would be a nice tool to have in OG for scheduling installs and service calls.
Take a look at TasksPro w/iCalendar and RSS feeds. It uses PHP and mySQL. Would be cool to integrate something like this into OPTI. Also WebCal could be useful for some. We are desparately trying to implement some calendaring/scheduling tools to help with field work. TasksPro http://www.taskspro.com WebCalendar http://www.ma.utexas.edu/webcalendar/