AbleCommerce Shopping Cart Software

I want to customize gateway url CommerceBuilder.InternetSecure.dll.
For Authorize.net i got the code of respective dll from the AbleCommerce ftp side.
Same way could i get the CommerceBuilder.InternetSecure.dll code?

Regards,
Poonam

AbleCommerce made Authorize.Net code open source to provide a complete code sample for payment gateways. If you want the source code for any other payment gateway you will need to purchase source code.

You can use the authorizenet class as a base for yours and change the variables to what Internet Secure is looking for.
For example on one I did, authnet uses something like x_firstname and virtualmerchant uses ssl_firstname.