$ sudo perl -I/usr/local/lib/perl5/site_perl/5.10.1/i686-linux/ -MCPAN -e shell

cpan shell -- CPAN exploration and modules installation (v1.9456)
Enter 'h' for help.

Can't ioctl TIOCGETP: Invalid argument                                          
Consider installing Term::ReadKey from CPAN site nearby
        at http://www.perl.com/CPAN
Or use
        perl -MCPAN -e shell
to reach CPAN. Falling back to 'stty'.
        If you do not want to see this warning, set PERL_READLINE_NOWARN
in your environment.
cpan[1]> i DBI
Creating database file ...

Can't locate DBI.pm in @INC (@INC contains: /usr/local/lib/perl5/site_perl/5.12.0/i686-linux /usr/local/lib/perl5/site_perl/5.12.0 /usr/local/lib/perl5/5.12.0/i686-linux /usr/local/lib/perl5/5.12.0 /usr/local/lib/perl5/site_perl/5.10.1 /usr/local/lib/perl5/site_perl/5.10.0 /usr/local/lib/perl5/site_perl /home/stefan) at /usr/local/lib/perl5/site_perl/5.10.0/CPAN/SQLite/DBI.pm line 5.