Assist (being an electronics engineer as well)

PCB Artist:
http://www.4pcb.com/free-pcb-layout-software/

PCB 123:
http://www.sunstone.com/pcb-products/pcb123


If you need to make quick prototypes or low count runoffs, I have found these two companies in the past, especially Advanced Circuits to be inexpensive and indispensable!


-Will