I'm trying to decase a 19" Dell monitor, and it's bugging the crap out of me. There were two screws at the bottom back, but it's somehow clipped together somewhere at the top front.

There appear to be two slots where a flat head screw driver would fit. I figured maybe there was a clip in there I could reach, but I can't seem to hit it. Am I just not using enough force? Is there some sort of technique I need to use?
I'll get a moel number if that'll help anybody help me.