I decided last week to reinstall windows XP/sp3. ( I inserted my window disk and reinstalled not repaired)

I have installed Power Tracks 12 back in to my computer but have not yet got round to reinstalling Band In a Box.. However looking at my C drive today I see there is a folder titled bb and it appears to have much of the bb program already lying there. example styles from 0 to 76 etc.

How does this come about?