How to crop ALL images manually

[femme]

So i learned how to resize the thumbnails to be all the same size...and I learned to crop.
But is there a way to crop all images at the same time manually?
http://robert-p-daily.com/gallery/thumbnails.php?album=11 (ive cropped the first image)

[femme]

I meant to existing files already uploaded....how would i get to crop those images w/out going through each one to crop manually?

[Stramm]

Use the admin tools to recreate thumbs and/ or images
Please read the docs