You won't need to get someone else's help. There are demo versions of past version of the game posted on the site below for the very purpose of walking up the game to the current iteration in the event a version was skipped. You can't play these versions without a license key but you can import from 23 to 24 and then move the game to 25 using these demos.
http://www.ootpdevfiles.com/ootp/