Yeah, thanks for that link, it had the information I needed.
This is what I finally did. First, use the old 5.61 perl to run the following script:

#!/usr/bin/perl                                                       
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use CPAN;                                                             
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autobundle();
[download]

That will create a file in ~/.cpan/Bundle called
Snapshot_2002_08_06_00.pm
Now run the following script with the 5.8 perl

#!/usr/local/bin/perl                                                 
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use CPAN;                                                             
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install 'Bundle::Snapshot_2002_08_06_00';
[download]

If you are lucky, it will do it. You may get some problems
with complex modules, like SOAP, so just delete that entry
from the snapshot and try again. :-) Also, you can run this as a non-root user, and it will download,
and build, but you will need to go thru later as root, to do
the "make install".