Reply to 6 pin slide potentiometer?!

hey there..

i just purchased two alps slide potentiometers for an umc32 project.. (click).
but when the package arrived today i was kinda confused.
there are 6 pins on each poti. 4 on the one side, 2 on the other..
how do i solder them to the standard ground, 5v and signal?
what's the direction of the poti? i believe the 4 pins are meant to be at the top, but im not sure..

thanks for the help!