You sir, are correct! Dual Channel requires 2 sticks. Perhaps the guy meant DDR, you know how confused these salespeople can be!
<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>