Hi guys,
I took a look at the git repo of namecoin and saw that some translations had been added. If it would be helpful, I can happily translate and post the gettext file here, so just let me know. If, on the contrary, you'll follow Bitcoin and use a Qt GUI (and therefore switch to .ts files) or if it's too soon for translations, well, I can happily wish you good luck and wait for the right moment, too.