Question What if I need to reinstall my operating system ?

Question How long can I use this unregistered version?

Software is not registered, would be in the title bar displays "not registered"

When you are not registered, you can only add 8 scheduled reminders record, register does not have this restriction.

Question If I purchase Desktop Reminder Elves how long can I use it ?
  Registered users of Desktop Reminder Elves are immediately eligible for lifetime upgrades and support. Once you purchase Desktop Reminder Elves you can use it for as long as you like and if a new version is released you can
get that too. Nothing more to pay ever.

Question If I buy Desktop Reminder Elves, how many computers can I install it on ?
  Registered users of Desktop Reminder Elves are allowed to install the program on only 1 computer.