Make sure you get the trim removal tool or make one from coat hanger or something. I bought one on Ebay for $7 which was half the price for similar one from AutoZone.
Basically you need to insert the removal tool under the trim, move it along the trim until you hit a clip. Once you locate clip, try to grab it with the tool and pull towards middle of the windshield. It should allow the trim to snap out of it. Start at one of the ends and move forward.
I had mine off in 5 minutes but I had to ask friend for help with first few pins until he showed me how to do it.