After some search on the net for PPD/driver for Epson Stylus Photo R360 I managed to find this: http://www.avasys.jp/english/linux_e/dl_ink.html, where I downloaded sources of some tools, which helped me to generate this ppd: http://www.titov.net/downloads/ekspr360.ppd, which is the only thing you need to print with this printer under linux.