We wanted to enclose out HTPC into that cheap furniture, making it nice looking.
Step 1: Hinges and a Hole
Screw some hinges on it and make a hole to hold the PC power button.
Step 2: Cover the Door
IKEA have many kind of them, fix that to the panel using a professional stapler.
Insert the button in its hole.
We used GULLVI: http://www.ikea.com/it/it/catalog/products/20208612/
Step 3: Prepare for the Mobo
The ones we used were into the PC case we had before this idea.
We put some glue to be sure they were stable.
Step 4: Fix Mobo
It should be very stable and fix.
You can see a picture of the rear of the furniture, we strongly encourage you to fix wires as we done.
Step 5: Add the Door to Furniture
To make the door closeable, screw some magnets below the middle plan of the furniture, and some iron plates in corrispondence of them directly on the wooden panel.
NOTE: you have to solder the PC power button if you want to swith it on!