Hi Harold, yes you can use your sub with your amplifier. I personally would suggest running your speaker cables from your amplifier to the subwoofer speaker level inputs, and then connecting your speakers to the speaker output terminals on the sub. This will allow you to filter the low frequencies from the audio signal before they ever reach your speakers. The sub you want to use has a built in crossover that you can adjust to your liking as well. This will allow you to determine just how much bass is sent to your main speakers, while the sub handles everything below the frequency you set. And yes, 170wpc will be more than adequate to power this set up.
Living Room: L/R CBM-170's; CMT-340C; HTM-200 rears; SVS PB-10isd; Yamaha RX-V757; Sony VLP-HS20 w/an 84" screen
Bedroom: L/C/R/LR/RR HTM-200's; HSU STF-1; NAD L73; Sony Bravia 32" LCD
Stereo:L/R NHT SB2's; HSU STF-1, NAD C320BEE Integrated Amp, NAD C521BEE CD player, NAD C422 Stereo Tuner