i have a full backup of my mac hd on an external hd. can browse it as if it were my local HD. if i were to do an 'erase and install' installation of tiger and i connect the external hd, would i be able to drag programs over from the backup to my local hd with tiger, and have the programs work properly? i know you can't do this in windows b/c of all the background files that are needed, and the registry changes, etc. but is it possible in OSX?