Jamil Zainasheff says to use a 10 to 1 ratio: i.e. 1 gram DME to every 10mL water and a 1/4 tsp of yeast nutrient. Boil 15-20 minutes, cool, and pitch yeast.
That's how I've always done it and it works well for me. I'm not sure where the pint of water comes in, but that seems to me to make the starter wort OG jump up to 1.070 or 1.080ish, which would be way too high. Starter wort should have an OG of 1.030 to 1.040 from what I've read.
Sounds like your initial "recipe" is spot on. if you are only making a 1L starter. Like the others have said, you need to use a yeast pitching rate calculator to dial in the starter volume based on the predicted OG of your wort. As far as using yeast nutrient with a smack pack? I'm not sure about that one. I'd follow the advice of the more experienced guys here.