I need a web calendar with events

I just need a simple to view and simple to administer calendar for my website, I need it to display exactly as shown on this page of my site [login to view URL] so that I can put any calendar of any month on the right and have text on the left again, as on the page shown at the link here [login to view URL], it also needs to have an admin area so I can add event dates and they show on the calendars on my events page, I have looked at some php, mysql script readily available but none give me the ability to show the calendars like I have on this page of my site now, I hope someone can help with this small project, many thanks for looking.