just got it from one of the member of my badminton club. it might not be useful to advanced players. anyway, check it out and feel free to challenge the author hehe.... http://s32.yousendit.com/d.aspx?id=29QR4DIOIPTKR2U4VPC3GOVGKF
sry jkusmanto, my bad. i didn't make a search b4 i posted it. perhaps my club member got it from your post!