This invention relates generally to a computer system and method for integrating insurance policy underwriting. In one aspect it integrates the older legacy insurance policy generating systems to on line systems where users access the system through browsers. The computer system to perform the process of underwriting, rating, quoting, binding, and booking an insurance policy includes browsers, data bases, processors and a dispatcher that parses the information to select an insurance process. Suitable software programs review messages received from users to determine if certain messages are less than a prescribed limit. If a message is greater than the limit, then the message is parsed into a header information and one or more data fields whereby the header information is provided to a legacy processor and to policy generation software for further creation of policy related information and documentation.