A client computer collects registration information and uploads the collected information to one or more remote registration databases. The collection and/or uploading of registration information for multiple manufacturers is performed in a unified manner, improving the user-friendliness of the computer. According to one aspect of the invention, a single user interface is used to collect the registration information for all of the manufacturers, preventing the same question from being asked multiple times. According to another aspect of the invention, a multiple posting method is used to upload the registration information to the registration databases. In the multiple posting method, a single network communication link is established between the client computer and a network that the registration databases are coupled to, via which multiple client computer to registration database connections are established.