This bridge calculator allows you to score bridge with regular points along with scoring using IMPs. Both scores are displayed when the contract is selected. IMP scoring allows one to play bridge with 4 players. When you use IMP scoring then there is less luck involved in the scoring. IMP scoring is based off data from about 30,000 rounds of bridge. A high card score doesnt mean youll score highly in the IMP system.
Selecting 0 for number of tricks means the partnership had made their contract. Check http://www.compensationtable.com/about.php for more info about the scoring system.