OS X Leopard Oracle and Perl

Hello,
Have had problems installing the Perl Oracle DBI for an OS X Oracle  
instance on  Leopard on an intel iMac.

Initially tried to install using CPAN. This failed and broke my  
environment. Now I can access sqlplus as the Oracle user, but as my  
user have to log in with the sid, e.g. sqplus scott@sid, or I get this  
error:

		dyld: Library not loaded: /b/227/rdbms/lib/libodm10.dylib
		  Referenced from: /Volumes/u01/app/oracle/product/10.2.0/db_1/bin/ 
oracle
		  Reason: image not found
		ERROR:
		ORA-12547: TNS:lost contact

Was able to install the DBD by following this blog:

	http://blacka.com/david/2008/11/12/how-to-install-dbdoracle-on-mac-os-x/

(Without these changes the install failed.)

Now when I try to connect using the Perl tie to the instance I get  
this error:

		dyld: lazy symbol binding failed: Symbol not found:  
_OCINlsEnvironmentVariableGet
		  Referenced from: /Library/Perl/5.8.8/darwin-thread-multi-2level/ 
auto/DBD/Oracle/Oracle.bundle
		  Expected in: dynamic lookup
		
		dyld: Symbol not found: _OCINlsEnvironmentVariableGet
		  Referenced from: /Library/Perl/5.8.8/darwin-thread-multi-2level/ 
auto/DBD/Oracle/Oracle.bundle
		  Expected in: dynamic lookup
		
		./runtest: line 5: 57176 Trace/BPT trap          perl test.prl

This page appears to address an identical problem (Snow Leopard):

	http://www.nntp.perl.org/group/perl.dbi.users/2009/11/msg34424.html

Their conclusion: user 'activated' 64-bit perl on their system, which  
fixed the problem for them. perl -V gives me a lot of version info but  
not a nice list like this page displays; I see 5.8.8 which I would  
expect and that only; no bit-information included. Not sure how to  
apply to my system.

Thanks in advance for any advice.