The Columbus, Ohio-based Compuserve Inc on-line service operator owned by H & R Block Inc is to invest in one-year-old Novell Inc spin-off company Network Publishing Inc, Provo, Utah, which provides services for publishers on the Internet. Network Publishing will help Compuserve’s information providers to manage security, do customer billing and handle customer support on the World Wide Web. The company currently has a staff of only five; terms were not given.