Soften cream cheese in the microwave for about 1 minute. In a food processor jar, combine cream cheese, onion, garlic powder and sun-dried tomatoes. Puree for a several seconds until tomatoes are well chopped but consistency is still thick. Add the crab meat and puree for another few seconds. Salt and pepper to taste. Place mixture in airtight container and chill for about an hour. Spread over pita chips or crackers and top with chopped green onions.