krisp - You've had heaps of wonderful advice but I just thought I would mention a good parent friendly book/dvd called '123 magic'. Lots of local community groups or early intervention groups also run courses in this BH management model in NSW (not sure about other states) which is the one I attended for work (child care worker). It's basically about effective use of 'time out' after natural consequeces don't work and can be really good to use with toddlers up to 10ish yr olds. Also Steve Biddolph has some great books specifically about raising boys. Hope things get better soon.