Here is some good info on testing MOSFET transistors, one link uses a DMM and the other link is from my friend Jestine Yong, he shows you how to test a MOSFET using an analogue meter and I must say I really prefer Jestines testing methods. Click here for link 1 and Click here for link 2, also click on the photo below for another great link on testing MOSFETs.