FC3: Nautilus opening new windows

[Frank]

I've been looking for a way to stop Nautilus from opening a new windo 
for each subdirectory that I descend into, thus far without success.  A 
coworker is running an older version with a checkbox controlling this 
behaviour in the preferences behaviour tab.  The current version does 
not have this option.  Is there another way?

If not, can anybody suggest a more efficient graphical file browser?

Frank.