Install:

*Over write folder 'Build' to your FX SDK install dir
for example, my dir is: C:\Program Files\CASIO\fx-9860G SDK\
*Copy 2 files in Folder 'lib' to '(your install folder)\OS\FX\lib\'
ex: mine is: C:\Program Files\CASIO\fx-9860G SDK\OS\FX\lib\
*Copy the header file 'SH3Timers.h' to '(your install folder)\OS\FX\include\'
ex: mine is: C:\Program Files\CASIO\fx-9860G SDK\OS\FX\include\

Detail in the header file.