CompuServe Messages

Hello I have recently purchased the DeskTop Set Professional Version 4.1a from a local computer shop. No registration card was included in the box. Would you please advise to whom I should send my name, address and product serial number? Also please indicate whether you prefer E-mail or by post office. I have been using the Junior DeskTop Set happily for awhile and decided the extra features in the full version would be useful. I have noticed some people have version 4.0c and others have 4.1a. Are there any significant differences between the two? After the pending update will there be only one version? Thanks from Doug Bond