Is it possible to have "selective deleting?"

Hello,

I have made numerous backups on the WD My Book Essential (smartware) 1.5TB drive. All the boxes are checked for back up: music, movies, doc. etc. I would like to delete the backed up movies to add more space for photos and music.

I can’t seem to figure out how to selectively delete just the movie section without wiping the drive clean and starting all over. Is it possible? I looked into the zip files in the drive and thought I could just delete those individually. They aren’t exactly in the same order as what is on my computer and I’m feeling a bit nervous about trying it if there is another more fool proof method.

Any help is appreciated,

Hooper 

Smartware doesn’t have that option, so erase the backup and start over.