setting fonts for Yelp

[Alexander Kirillov <kirillov math sunysb edu>]

Hi guys:
can any one tell me if there is a way a user can specify fonts to be
used by Yelp? On my system, it uses ridiculously small font sizes.
AFAIK, Yelp uses Gtkhtml2, but I couldn't find anywhere a  configuration
dialog which would allow changing fonts used by it. In fact, even the
dialog for setting Gtkhtml1 fonts is gone in GNOME 2. Looks like a
serious problem to me  - and my vision is reasonably good. 

At least, can I do it by changing some  values
 using gconf editor? 

Sasha