In PSE 9/mac the easiest way around this is to click the Page Setup button and use that to select your paper size. (You'll see them in readable English there.) The print window in PSE will change to show the gobbledygook for the one you choose.
Thank you, Barbara. I kind of figured that out, but was curious as to what those names mean. What planet was the person responsible from?
Does this still exist in PSE 11? Is there a compelling reason to upgrade to 11?
Print related features are available in PSE11 as well with option to choose page size when you click Ok from print dialog box which pops up OS dialog box from where you can customize options.
There are host of new features in PSE 11 like Action Player, New filters and guided edits etc. Check out here http://www.adobe.com/in/products/photoshop-elements.html. Apart from this on version over version there are improvements in many workflows and features.
You can download the trial and check if you like it an upgrade to it as you do not have to pay for full if you upgrade.