Microsoft RMS seems to connect to every COOP and hardware distributor in the United States.  This Microsoft RMS hardware store POS case study is in the United States:  http://www.microsoft.com/casestudies/Microsoft-Dynamics-Retail-Management-System-2.0/Andalusia-Cash-and-Carry/Hardware-and-Lumber-Store-Point-of-Sale-POS/710000000665

What distributors does it connect to in Canada?