Italiangreyhound, no worries...
o No time out. Traditional time out advises you to put kid in a place, then walk away/ignore for a set period of time. This, for neglected child, is just taking them back to their past. Its adding a fear of abandonment to the mix.
So, we take him away from the action (not leading him...we pick him up and carry him) to the enclosed front porch of the house. I shut us in so no escape. I have removed all potential missiles from the area. In there, there is a large fluffy beanbag. he can sit on it, roll on it - which is a nice tactile activity. or, if the aggression continues, he can use it as a punch bag. I sit in the room with him, on a seperate bench, and with body language (avoid eye contact, roll shoulders and body away from him by 30-45 degrees) let him know i am unimpressed. I have had him shout "I dont want to hit the beanbag, I want to hit you!" but I persevere, using the beanbag as a shield. let the aggression run its course. His therapist told us to keep him there until you can see its all burnt out. All the time asking "are you ready for a cuddle yet?" When the tantrum has subsided, he will climb up for a cuddle. Then we leave.
o No restraint. One of the very worst things we did was too follow a parenting book for "normal" children, and physically restrained the child when he went into a meltdown. AFter 3 attempts, I gave up in tears because it was just damaging to all of us. I later found out from a family member that he was strapped into his buggy for most of the day, not able to get out and play.
o In the early days, (and sometimes even now if I have recognised a trigger) I will say "oh you look a bit cross today - would you like a little cuddle?" This was difficult because, after being bitten or punched or kicked, its human nature to get angry. My DH in particular felt this was rewarding bad behaviour, but sometimes, you need to recognise that behind that aggression is a terrified child who needs some reassurance. However, unlike "normal" kids, where you would grab them and hug them and ask them whats up, with LO we left the offer of cuddles up to him, always. We offer the cuddles, but its up to him when and how long he will have cuddles.
o We have a litany of "safe" words which we repeat when he is in a bad way. "Lovely hugs and cuddles and squeezes and kisses and raspberries" (all said with corresponding actions) - never ever using the word "happy" as this is a trigger for him, for some unknown reason. We started saying "dwells likes to give you cuddles" "Dwells likes to give you cuddles and kisses" "dwells like to give you cuddles and kisses and squeezes" etc etc. By giving him these safe words, we remind him that we are not "them".
o We found which words we could use to express emotions, and give him those words - "oh I see you are very cross" "That makes me Sad" "he is being mean" "He is grumpy today" - none of these had connotations like "angry" and "happy".
o Distraction is a biggie - ignoring wilful behaviour, by suggesting "when you have finished being silly, (bad behaviour) maybe we can go to the park/play with your cars/dig in the garden. "
o Jumping time. Get him physically active on the trampoline/bike/scooter for a couple of minutes. The act of doing something physical can often offset the bad behaviour. So we will say "well that was not nice, how about you go jump on the trampoline and have a little think about that." I know someone who uses "Random Dancing" from iCarly. The daftness of it gets everyone turned around pretty fast. Possibly more suitable for older kids.
o Giving lots of positive feedback about lovely play is good - you do not participate in the game, or ask any questions, you just state what is happening in the game, sometime parroting what he has said. So...."The car is going up the ramp of the garage....the red car is driving fast....its making a loud brrrmmm noise...it crashed into the fire truck...the firemen are a bit cross". Or even "you are climbing the ladder...you are up high in the sky...you are going on the slide...very fast" - I think they call this "attending". I found this hard because I want to ask questions!
o I do like this book - not for LO but for older kids, because it allows you to bring dicipline without losing your cool. Allegedly. 
it talks about us getting in to a dance of dicipline with the kids when you just end up making threats that you dont or cant follow through. ALso about picking the right sanction for the child.