I merged your question with another of the same.
1) Serial number: Everyone should go into ABOUT HELP screen and print the screen, or write it down somewhere. If you don't have access to that anymore, you can contact GlobalSCAPE for them to send it to you, IF you know what email address was used to register the software. Go to this page:
http://www.globalscape.com/support/csb.aspx At the bottom of the page is a link to request your serial number.
For the past couple years, I have kept program registrations, notes inside a password keeper.
Any Password (or others like it) work wonderfully. Can copy whole emails into the note section. As I add a new program, I put in the date, and the serial number. Support links are good, where purchased, etc. If I have to reinstall something, I have my info easily accessible, encrypted and portable. Can't say that I have ALL my programs identified, but most of them. Less paperwork than printing all the info, and stays up to date with edits and changes... Keep website info in there too. And forum info (where I have registered, usernames/passwords for each, etc)
2) Yes, unfortunately and very sad to say, our lovely CSB will become outdated and need to be replaced. Please see my earlier response on this thread. So we are actively looking at other software. ANY COMMENTS about other software are welcome in those areas of the forum. Most of us are not in a hurry to jump ship, but we must face that fact. Hopefully this forum will grow and be able to support users of the other software as we migrate... That is my wish. Users of CSB are a special breed and I really hate to see us broken up if we can still offer support on the other programs!