not sure if that's what you're looking for but i'm doing all thumbs manually. i pick up from gallery photo which i like the best then i pick up from photo area i like and i crop it. here's example of my biggest thumbs (made in tgpx):
http://druidsrealm.com/
and here's from gallery (smaller thumbs):
http://asiansexeden.com/thai-girls/a.../061index.html
thumbs for this gallery was a bit tricky to make cuz owner of the site are branding photos in the way which sometimes make very hard to thumb out of it all handmade by arles.
also here is my tgp, all thumbs on the right (smalles one's im using 130x130) are all handmade in tgpx:
http://asiansexeden.com/
like i said i'm picking up part of girl which is looking nice and crop it but if you prefer, pussy, tits, faces or anything i can do this too all depends on price you wanna pay.
if you ofc looking for some automatic program/script to make thumbs just nvm my post.
cheers,
D.