On my '02, the 2 clips are a pain to get out. I just yanked 'em finally and rebent them into original shape after. They go back in very easy, to make up for the challenge of removal...
To remove the headlamp assembly, if that's what you're doing, you then need to depress the tangs on the posts (1 ata time) and pull them out. IIRC they are on top and toward bottom, on outside. If you have the new headlamp, its posts show you where to look. Good luck!