there is a package that works for the zaurus.
image viewer...
here you go
photostorage_1.0.0-en_arm.ipk
if you cant find it, ill email it to you. do a search in google or here in the forums. i got it from the forums dont dont have a link to it.
its the japanesse one but with all english.
Im not using it but when i did, it was fast, reliable. i am actually using tkcgallery because it also displays information of the jpeg on the right plain like apature, speed, ligthing, etc. author...yada yada.
and i know your gona ask for another question like
what is the best image editor? VisualQ
but we have a problem...swap size on the z is ver limited so now you need this software
qtopia-memoryapplet_1.1.1a_arm.ipk
qtopia memory aplet tells you how much memory you have on the taskbar. Not only that, clicking on it gives you options in enabling swap files on your cf or sd card. up to 64mb well over the limit for opening those 6megapixle images and to edit under visual q embosing, resizeing, trimming....you name it.
Let me know if you need more info.