"This curry noodles recipe is a condensed version of an ancient Thai noodle dish called "Kao Soy". Since it would take an hour or more to make the original recipe, I've simplified it somewhat while still maintaining that delicious original taste. You can use dried egg or wheat noodles for this dish - or splurge and pick up some fresh noodles at your local Asian food store or grocery store deli. A delicious curry noodle recipe you'll be sure to enjoy." -- from about.com
Taste-test the noodles, adding more fish or soy sauce if not salty enough, and a little sugar if too sour. If your noodles happen to be too salty for your taste, add 1-2 Tbsp. lime juice.