I bought a copy of Perl Cookbook 2, in which it says on page xxx that I can download sourcecode at www.oreilly.com/catalog/perl/ckbk2/ , but that url gives a 404 error, and I can't find the site on your website.
Where can I find it?
I'm sorry for the confusion. That link should actually be http://oreilly.com/catalog/perlckbk2/ which takes you to http://shop.oreilly.com/product/9780596003135.do. On that page, in the Essential Links section, you'll find a link to Download Example Code.
Hope that helps!