If your receiver has a "LFE" or "Sub Out" RCA jack, then feed that to the subs "Line" input. Configure receiver accordingly.
If it doesn't, connect the receivers front R/L speakers outputs to the speaker terminals labelled "In" on the sub, and the speaker outs on the sub to your front R/L speakers. Set subwoofer to no or off on your receiver.
You may need to reference your receiver manual.
[edit] I just looked at your speakers. You can't implement that sub into your system. Your sub only has a LFE type input (one jack). You need a receiver with a preamp out and a sub with both a right and left line level input, at the minimum.