Well not the ONLY,
you could fetch them from database convert them to a GD2 image and save in your files directory.. then pretend they have been uploaded.. and then send them through the upload routine.. but.. it would be a big hog on server..
moving them would give you some performance issues.. unless you have a dedicated server..
And it would be a BIIIG script to write.. for something you only use once..
Luc
PS: why dont you use both?? I for instance hacked
vb albums to be private only.. so user can show some pictures to his buddies only.. and upload to gallery when he wants to show the world!