Auto create an event in a google calender

I need someone to write a program, extension, greasemonkey script, or whatever is most appropriate that will take an entry from a blog, and automatically create a google calender event based on the following criteria: Event title: Title of the blog post Event details: Content in the post Event time and duration: a combination of the blog's date of entry and the "tag" of the post, with some preset criteria that associates the tag with a certain time and durations (For example: anything with the tag "P1" will always go from 8:30 to 9:20am.) Calender: the specific calender the event will be added to will also be according to a different tag Example blog: [login to view URL]