Virtual Merchant set up

Does anyone have any experience with setting up Virtual Merchant to work with the latest version of cs-cart?

I keep receive error messages of invalid user id, merchant id, or invalid credit cards when I try to run in both test and live mode.

I have contacted both cs-cart help desk and Virtual Merchant tech support. I provided them my ftp log in to my web site but all seem about to give up.

I wonder if cs-cart truthfully works with Virtual Merchant as it claims it does. I went to Virtual Merchant web site. I saw it lists many shopping carts it supports but I did not see cs-cart in the list.