An easy way to create an interactive calendar would be to use a Yahoo!
Calendar. It's as simple as setting up a new Yahoo! Account that you
don't even have to use for email! The only drawback is that you will
have one more place to log in to create the calendar. I think it's
worth it, though, because the Yahoo! Calendar provides you with many
features that you couldn't get just by creating a table-style calendar
on your own.
Check out the look of the calendar by visiting the one I created ... It only has one event on it, but you'll get the idea.
Go to mail.yahoo.com and click
SIGN UP! (Remember, you do NOT have to use this email EVER... you are
simply signing up for the purpose of using the calendar feature.)