Original webpage with japanese version by Masahiko Morii:
http://www.katch.ne.jp/~morii/x360wc/index.html
English source: x360wcs.eng_20070903.zip
Driver for XP 32-Bit: x360wcw.xp.32_20070903.zip
Driver for Vista 32-Bit: x360wc.vista.32_20070903.zip
Driver for Vista 64-Bit: x360wcx.vista_20070903.x64.zip