Updating the Twinax.sys driver file on a NT/Win 2000 or Win XP system: 1) Boot NT/Win 2000 or Win XP in "SAFE MODE" by pressing F8 before it starts. note: it is normal to boot very slowly in "SAFE MODE" 2) Go to the (WIN_DIR)\System32 folder. note: (WIN_DIR) is directory where your NT/Win 2000 or WIN XP OS is installed. 3) Copy the new Twinax.sys file replacing the existing one. 4) Reboot your NT/Win 2000 or Win XP (without F8) into normal mode.