I looked at "oldversion.com" and "oldapps.com" but found nothing.
I've been using XnView 1.6 for YEARS on my old computer. I found it to be the most stable, lightweight, awesome graphics viewer/editor for Windows ME-98. There's nothing better for such old, slow computers that have 128 Mb RAM or less.
I'm just looking to "upgrade" from 1.66 to either 1.67 or 1.68

(If you're wondering why I still use such an old version, it's because I prefer the dialogs for adjusting images and other things. Plus it has my favorite skin: "Layout do Brasil")
Thanks to the author of XnView for creating such a cool program!