adding new keymap?

["Jeremiah Holt" <jholt5638%earthlink.net@localhost>]

in my never ending task how do I add a new keymap to the system every key
gives unknown scan code I've grided them out and are attached here

/*      0    1    2    3    4    5    6    7 */       
/* 0 */ PWR, UNK, F3,  F1,  UNK, F2,  F4,  UNK,
/* 1 */ UNK, UNK, UNK, WIN, UNK, UNK, UNK, UNK,
/* 2 */ UNK, UNK, UNK, ESC, UNK, CTL, UNK, UNK,
/* 3 */ UNK, UNK, ALT,   `, UNK,   0,   F, UNK,
/* 4 */ LST, UNK, CAP,   Z, UNK, UNK,   T, UNK,
/* 5 */ RST, UNK,   X,   A, UNK, UNK,   D, UNK,
/* 6 */ RGT, UNK,   3,   W, UNK,   1,   4, UNK,
/* 7 */ Del, UNK,   E,   S, UNK,   2,   R, UNK,
/* 8 */ UNK, UNK, F10,  F9,  F8,  F7,  F6,  F5,
/* 9 */ UNK, UNK, LFT, UNK, SPC, UNK, UNK,   V,
/*10 */ UNK, UNK, DWN, UNK,  , , UNK, UNK, UNK,
/*11 */ UNK, UNK,  UP,   .,   L,   K,   C,   G,
/*12 */ UNK, UNK,   ',   /,   ;,   O,   J,   H,
/*13 */   Q, UNK,   +, ENT,   P,   I,   U,   Y,
/*14 */ UNK, UNK, UNK, UNK,   9,   8,   6,   5,
/*15 */ UNK, UNK,   \, UNK, UNK, UNK,   7, UNK
};
LST = Left Shift
RST = Right Shift
RGT = Right Arrow 
LFT = Left Arrow
ENT = Enter