Using and Customizing Templates in OpenOffice.org
I believe in using tools. And if the tools are easy to use and free, so much the better. That's why I'm a big proponent of using templates. Templates are one of the best ways to save time, effort, and be sure that your documents are consistent when they need to be.
Templates make life easier when you use them for letters, documents, brochures, etc. but they really make life easier when you use them for labels. The spacing for your label documents has to be extraordinarily precise to make sure that the text is printed exactly where it needs to be—I've tried making my own and while it's possible, it's really not worth it. It's not worth it because there are so many pre-existing templates to use instead.
There might be a few sheets of labels somewhere without a corresponding OpenOffice.org label template, but they're rare. You can print on virtually any label sheets you want with the templates included in OpenOffice.org, and the templates from WorldLabel.