An Internet portal site Nurscape(R) for professional nurses was developed and evaluated. CyberNurse an interdisciplinary team of nursing academic faculty, physician and vendor personnel played an important role as an advisory committee for system design and content provision. The Nurscape(R) site was developed through the systematic approach of interaction among the CyberNurse, contents team, and technical team. Three approaches were used for a formative evaluation; 1) system evaluation including user testing and technical testing, 2) focus group survey for contents evaluation, and 3) analysis of the users' characteristics using the user registration information. Based on the data collected from the three different Internet environments (LAN, ADSL, Modem), it was found that the average access time and network status showed the corresponding differences in the latency of the network tested, but have been steady and consistent to use. And from the group survey some operational issues were found. In the user analysis the 20-30 generation nurses covered 94% of user, and clinical nurse working in the hospital and student nurse were active information seeking groups in Internet. However special nurse such as public health and home health nurse was the main group in community health area.