Headliner Removal

Can anyone tell me the process for removal and reinstallation of a headliner (ceiling) on a 2002 Dodge Grand Caravan?
Thank you...Ken

kind of a project because its helpful to have a good clip remover. remove all of the side pillar trims (some have seat belt hardware needing special tools). Make sure the battery is disconnected (air bag computer is looking at lots of stuff). slide out the rear hatch