Moneris has been paid to merely advertise those shopping carts :smile: It encourages businesses to visit those sites and set their carts up with them.
Call Moneris and talk to their sales dept. They will give you all of the information in a package and email it to you. They have a bit of text that needs to be added to your terms and conditions and a few other section of the site, this is merely verification information so they give you the ok to advertise you are Moneris approved. Presumably they will do a preliinary check of your site and away you go. Moneris then will give you a final checkout/process payment page that you'll use to complete the process.
Have to call for more details, have a look at the e-commerce section of the website under products so you can get up and running faster.