The company's principal activity is to provide a range of transaction and information services and technology solutions. the company's services are provided for participants across the entire continuum of healthcare, including physicians and other healthcare providers and suppliers. the company transmits electronic transactions between physicians, pharmacies, dentists, hospitals, laboratory companies, other ancillary providers and payers through its transaction network. the company also provides physician services including administrative, financial and clinical applications and portal services, which offers online services for consumers, physicians and physician office managers through website. transaction services accounted for 54% of 2001 revenues; Physician services, 36% and portal services, 10%.