Perhaps he already tried that, and merely can't find the files on the hard drive whilst searching. Never fear, they're there! Somewhere. I'm gibbering tired right now so I can't recall how it's all set up, but if you told it to install to the hard drive (the default option, I should add), then it's there. You just won't be able to see it when you're connecting it the Zaurus to the computer.
Or, if you never get the option, then just reflash it and try again. (Presumably converting it to English beforehand)