This zip file contains drivers for several versions of the ess modem. I used it to install the modem on an IBM Aptiva-after losing the original software!- and it worked wonderfully! Took a lot of searching-no thanks to the ESS homepage!- but have finally found the software that will work! I created another folder under c \temp\ called "modem", unzipped the files there...powered off computer, installed modem, and when windows asked where to locate the driver for the "new hardware", I entered the location of the unzipped file, and bingo! It works!!! Enjoy all!