We actually Combined VIRTUEMART with the NOPCART shopping cart in the site.
http://computerpartsinsider.com
NOPCART is a separate shopping cart(available free on the net). Then we decided to combine them, because this cart is much handy in our Site.
But it works fine specially in submission to "securesites.com" or SECURED PAGES (https).
And we did some modifications on the NOPCART scripts and make it into POST method.
Dear d1od3,
I have an existing NOPcart that posted to Authorize.net via a PHP code for about 30 days - the the transaction key expired, and PHP now requires curl. The message I'm now getting is that Authorize.net no longer supports that type of integration. How did you attach the NOPcart to VirtueMart? Are you using curl? I am a true newbie, with no clue. Where did you find the PHP code with curl? Thanks for your time and help. Bassgenie.