I forgot to mention that there are several dillo versions around.
By editing dillorc, I could change fonts in
this one: dillo-0.8.6_iliad-0.7.zip.
But not in
dillo-i18n.tar.gz - only font scaling was possible. This one is a more useful version, for me, because it can display utf-8 properly. The font here looks fine and I would not want to change it anyway.
All versions are not perfect, and in different ways. For instance, google.ru looks fine in minimo, by looking at the html source, I can see that the charset is indeed utf-8. But in the internationalized dillo, this web page is displayed in windows-1251 and it is unreadable. While cyrillic hits in google.co.uk are displayed correctly. This dillo also allows one to read Russian wikipedia. I wonder if there is a site that could convert win-1251 and koi8-r to utf-8 on the fly. Google does it for its cached pages, but if one follows the links, they take him to the original site, where the text is unreadable again...