How to use Yahoo Maps in Japanese

1. Go to maps.yahoo.co.jp
2. Find the search entry box in the middle of the page (underneath kiiwaado - キーワード). It's a text input with a button next to it.
3. switch to Japanese input
4. enter your address into the box (Sakura Gaijin House offices):
   東京都新宿区西新宿7丁目２-６
   toukyouto　shinjukuku　nishishinjuku 7choume 2-6
   Tokyo City, Shinjuku District, Western Shinjuku, 7th Area, 2nd block, House#6
5. click on the link that says what you just typed in:
   
   Your new Yahoo Map!
6. look and wonder at map.

You can also browse the maps by hand to find someplace you're looking for. The section underneat the text input box is the Japan Maps section. Simply click on the city you want to browse in (Tokyo is 東京) and you will find a map of all the different districts in Tokyo. Click on it and you will be in a browseable map. The larger black numbers are the area number, and the smaller red numbers are the block numbers. House numbers are not shown.