Bring up a CPAN shell:

perl -MCPAN -e shell

Run these two commands in the CPAN shell:

o conf prerequisites_policy follow

o conf commit

You should exit and re-start the CPAN shell, and attempt to install a module. All dependencies should be automatically confirmed.

You may still have to answer non-module install related questions-- such as connecting to the internet.

Line 1 changes your dependency policy to follow instead of ask. Line 2 persists the change to your CPAN configuration file.