The File::Find docs for the version shipped with Perl 5.8 say

$dont_use_nlink

You shouldn't need to set this variable, since File::Find should now detect such file systems on-the-fly and switch itself to using stat. This works even for parts of your file system, like a mounted CD-ROM.

You probably want to make your regex case insensitive, as well.

At any rate, the point is that your wanted function's return value is completely irrelevant to File::Find. $File::Find::name's value after find terminates is not defined either. You have to use your wanted function to store the name, if you want to do so. Something like

my $found;

sub wanted {
    $found = $File::Find::name if /^eudora\.ini\z/i;
}
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You could also try File::Find::Rules which has a much nicer interface for simple cases.

my ($found) = File::Find::Rule
    ->file
    ->name('eudora.ini')
    ->in('C:\\');
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