[CentOS] ledgersmb installation

I'm attempting to install ledgersmb on Centos 5 and I'm sure that I've missed
something.

After doing the initial installation, I get a 404 when I get to the part of the
instructions that tell me to go to http://localhost/ledgersmb/admin.pl

/etc/httpd/conf.d/ledgersmb.conf contains the following line:

Alias /usr/share/ledgersmb WORKING_DIR

/usr/share/ledgersmb exists and contains a file named admin.pl

/etc/httpd/conf/httpd.conf contains the following line:

Include conf.d/*.conf

But when I go to http://localhost/ledgersmb/admin.pl I get this entry in the
apache log:

127.0.0.1 - - [08/Aug/2009:15:47:30 -0600] "GET /ledgersmb/admin.pl HTTP/1.1" 40
4 291 "-" "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.12) Gecko/2009072711
 CentOS/3.0.12-1.el5.centos Firefox/3.0.12"

What have I missed here?

-- 
MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com