Computer Room Design

ok well here it is. What are some layouts that can be done in this computer class room. The class room size is 37′6*34′ sq ft. (Its basically a square room) and it needs to hold 28 computers. I thought of some layouts like put the computers in rows from front of the room to the back, but i just need other peoples ideas on how this could be done. Thanks

I just bought new place to start my spoken english class i want to design the class room and office so if u know some good free software to do it pls tell me the site of address of it