A proper way to cook Mi Goreng noodles?
@ElendilTheTall's answer would probably make some pretty badass Mi Goreng, but the whole point of packet Mi Goreng is to be a 2 minute meal in the least work possible.

The way I make Mi Goreng is to cook the noodles in a small pot until they're just cooked (a little firmer than you prefer to eat them). 
Quickly drain them, throw them back in the same pot and add all the seasonings except the fried onion.
Put the pot back on the hot briefly (or just use the residual heat from the element) and stir the noodles all around. Basically stir frying them within the pot.
Tip them out into a bowl and add the fried onion sachet (or just eat from the pot).

This always works pretty well for me, I get a result that isn't too far in consistency from the real thing.

PS. Mi Goreng are Indonesian, not Thai :)