The autobundle command should create a module that 'requires' every module currently on your system. You can then copy this module to your new machine and try to install it, which will cause CPAN to download all the modules again.

I don't know if you can request just some of the modules, but you could either edit the bundle, or set CPAN to 'ask' instead of 'follow' module dependencies and then personally approve every one.

Update: Ooops, answered the wrong question. See the answers below.

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Jeremy
I didn't believe in evil until I dated it.