How do I open an Nzxt Hush computer case?

I need to access the motherboard to add RAM. I purchased the computer fully built, so i have never entered the case before.How do I open an Nzxt Hush computer case?
First, shut down the PC, and unplug the Power cord, the thick black cord near the fan, that leads directly into the Power supply.





Then, along the edges of the case, in the rear, on the left (when viewed from front) look for 2-4 screws, not the ones going into components, but the ones holding the back of the case, to the frame. They may be thumb screws, which require no tools, or may be standard phillips screws, which require just a simple phillips screwdriver.





Remove the screws, and then, using the indent in the case, on the left hand side (when viewing the front of the case) pull the panel towards the rear, until it comes off.