A Problem after upgrading to Apache 2.0.40

[achana saysit com]

Hi All.
RH7.1 has got Apache 1.3.16 - an old version with security problems
(those still on 1.3.16 should check it out ).
I installed the latest Apache 2.0.40 (STABLE)
Problem is : now I only get a directory listing rather than a web page
when I come in with a browser using the ip-addr.
httpd.conf has the same DocumentRoot as the de-installed 1.3.16
Question : how to I get Apache to serve up a web page instead of the
directory list ???