Mini itx case with external power supply

Mini ITX Build (Help With External PSU) - Cases and Power Supplies
Hi Everyone. I require your help on a project of mine. My friend who hasnt built a computer before has asked me to source out some parts to make a really small media center computer. He likes to be creative so he goggled up some ideas and found this cool looking case design and decided that he.

Mini-ITX Case with External Power Supply - Bing images
miniitxcaseexternalpowersupply, miniitxcase 800 x 688 jpeg 35kB. SilverStone Technology Thin-MiniITX Aluminum Casewith 500 x 500 jpeg 20kB.