Easy. I run XP SP2. Once you installed the cable driver, hook up the cable (keep the charger power off, ie unplugged from power supply), it installs the drivers automatically. Then look in device manager (right click my computer->properties->hardware) under ports, it has the device name listed and the COM port it uses (in my case COM3).
Then fire up the update application, choose your COM port from a drop down menu, click 'load' or similar (forget what it actually says), choose the firmware file (both firmware hex file and update app is included in the FW download). Dont touch any other settings then (with the charger plugged into your computer), power on the charger, and its all over in about 10s.
This is all outlined in much greater detail in the PDF instruction manual available through the link I provided in the OP.
To use the graphing software its a matter of choosing the com port and clicking the 'connect' button. It keeps graphs and logs (if you want) the voltage of both ports, as well as the voltages of each individual cell, charge current and the cumulative pack capacity. The log file is just a tab delimited file, easily readable in excel or similar. There is also a seperate tab which displays the each real time cell voltages to 3dp.
Download the cable drivers and logging software from
here.