Event reminders can now be set for any time from 5 minutes to 4 weeks
before the event starts. To use the new customized reminder settings,
just visit our Help Center at http://www.google.com/support/calendar/bin/answer.py?answer=37242
for instructions on creating event reminders.

Also, you may remember that we recently announced the new ability to
export all of your “My calendars” into a zipped file.  (See the
announcement at http://groups.google.com/group/google-calendar-help-updates/msg/8f297...).

To make bulk exporting even easier, we've added an “Export My
Calendars” link to your Settings > Calendars tab.