Off the top of my head; make a paste out of: a piece of tamarind about the size of your thumb, a piece of galangal (or ginger) about the size of your thumb, 4 cloves of garlic, a stick of lemongrass, 1 red chilli or more if you're brave and two tablespoons of vegtable oil. Stick it in the blender is easiest.
Brown the meat, fry the paste off and pour over a tin of coconut milk. Add vegetables of choice (broccoli, carrots, pepper etc) and simmer until it is all cooked.
The difference between red and green is the tamarind and there's no coriander, fish sauce or anchovy in red curry. You can buy tamarind as a paste, so use about a teaspoonful if you don't get fresh root.