I finally discovered how the rearview mirror assembly attaches itself to the windshield. It's a simple TWIST and TURN. To re-install your rearview mirror, just align the base and turn either clockwise or counter (it doesn't matter), it will lock in the mirror assembly after a quarter of an inch turn. Broken windshields like mine, you have to take out the original base that came from the windshield first ofcourse.

@Lookin4Trouble - Yes I'm from the PI. Ordered my new windshield from the dealers yesterday and specified your suggestion of having an anti-uv coating. There were only 2 choices available (I think both have the anti-uv coatings on them), 1 was plain and 1 had a green tint on top. I opted for the plain one since my original didn't have a green tint anyway. It costed me US$753.00 only. Insurance said they'll take care of it. Lucky me! Thanks again!