;assuming A=number of element (any clr acc.7 needed is performed already etc.)
   mov   b,#3   ;3 bytes per table element
   mul   ab
   mov   dpl,a
   mov   a,b
   add   a,#HIGH(Table)
   mov   dph,a
   mov   a,#LOW(Table)
   jmp   @a+dptr

or the same in a more brutal incarnation:

   mov   dptr,#HIGH(Table)+256*LOW(Table)
   mov   b,#3   ;3 bytes per table element
   mul   ab
   xch   a,dpl
   add   a,b
   xch   a,dph
   jmp   @a+dptr

Have fun!

Jan Waclawek