outlook calendar connectivity with java web service

We currently have a java/jsp online web service that includes it's own custom calendar. I am trying to do some research into the possibility of connecting it to a users outlook. Our basic needs that are most simple is some way to sent the person a meeting request that can be added to their outlook from our service.

I know the ideal solution is to sync back and for开发者_JAVA百科th but simply being able to import the data from our calendar into someone's outlook would be sufficient.

Does anyone have any resources they can point me to that might help with information gathering, or any example/comments?

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Here is a sample to sync calendars using javascript,ie and ActiveX
http://www.codeproject.com/KB/office/OutlookDemo.aspx

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I found a simple solution to getting what we needed. Outlook can email an event invite, I had one emailed to me... then copied the format of the email and just have the system sending event invites as emails. That is sufficient for our needs.