ViewCVS and Apache configuration

I am trying to install ViewCVS on a Linux box with Apache. I have done
"everything right" as far as I can see from the install instructions and
what I can google for. But, all I get are 404 errors for the URL that
should work.

I am not a web admin guy so the httpd.conf file is a bit of a mystery to
me. The section that I added based on instructions and googled info is
this:

#
# Changes for ViewCVS
#
ScriptAlias /viewcvs/ "/usr/local/viewcvs/cgi/"

Doesn't work. Anybody here familiar with ViewCVS? How about Apache and
python based cgi?

Alan