fs-setup problem

[Tam Ho]

I'm running RedHat 5.2, Perl 5.004_04, PostgreSQL 6.4.2., 
DBI 1.06, DBD 0.89.  

Here's the error I get when I run fs-setup:

[freeside at db bin]$ ./fs-setup 

Enter the maximum username length: 8


Freeside tracks the RADIUS attributes User-Name, Password and Framed-IP-Address
for each user.  Enter any additional RADIUS attributes you need to track for
each user, separated by whitespace.
:
install_driver(postgresql) failed: Can't locate File/Spec.pm in @INC (@INC
contains: /usr/lib/perl5/i386-linux/5.00404 /usr/lib/perl5
/usr/lib/perl5/site_perl/i386-linux /usr/lib/perl5/site_perl) at
/usr/lib/perl5/site_perl/DBI.pm line 517.
Perhaps the DBD::postgresql perl module hasn't been installed,
or perhaps the capitalisation of 'postgresql' isn't right.
Available drivers: ADO, ExampleP, Pg, Proxy.
 at /usr/lib/perl5/site_perl/FS/UID.pm line 69

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Any help you can provide would be greatly appreciate.  Thanks!

-tam