I thought this was one of the better diagrams I have showing kyusho. To be honest I don't know what ryuha it comes from but it's probably kotou ryuu. I also heard it could come from shinden fudo ryuu though, so I can't say for sure.

Anyway here you go. It might be interesting to see how Japanese pressure points differ from Chinese.

http://img293.imageshack.us/img293/3846/kyusho0db.gif