OK. You need a MIDI utility like MIDIOX ( http://www.midiox.com/
). Download & install this on your computer.
Then, you need a MIDI to USB cable (something like an Edirol UM-1), that has a USB connection on one end and 2 MIDI connections on the other.
Connect the KS to the computer with the MIDI to USB cable (MIDI out on the e.g. UM-1 to MIDI in on the KS & MIDI in on the UM-1 to MIDI out on the KS). Turn on the computer, then the KS & start MIDIOX.
Check the MIDI Devices in MIDIOX & set them to your MIDI to USB device.
Click on the View tab & select Sysex.
Click on Command Window & select Load File
Select the Syx file you want to load.
Click on Command Window & select Send Sysex.
You'll have to repeat these last 3 steps for all the sysex files.