Calendar or Upcoming Events for my community Website

I need simple event calendar or upcoming events for my community website. I already have lots of members and members area... and would like to add event calendar as option for my members to add events to main calendar and their own calendar. I personally like Google calendar options... [login to view URL] basically - ability to create events per date... and categorize them. WHAT ____________ WHEN ____________ WHERE ___________ CATEGORY _________________________ and DESCRIPTION __________________ Each member will have be be able to create their own events... from their profile pages... and calendar would have to display ALL category events in general pages of the site... and ONLY THAT USER events on their OWN personal profile pages. If you can integrate Google Calendar with my website - that would be best solution... but if you can't - let me know what you could do... It would be nice if you already have working example - and you could modify existing calendar - and make it work with my site... Also if this will take longer then 1 week to do it - don't bid - as I can't wait too long. I am looking to start working with someone who will be able to get this project started immediately and finish it fast.