First you will need to make sure you have an account with FastTransact.com

Once that account is set up, login to your admin area and go to Cart Settings >>  Payment Methods and activate the FastTransact.com gateway.

Set the Protocol to HTTPS and have a SSL set up in Global Site Settings to use FastTransact.com.

Enter in your merchant or agent account provided to you by FastTransact.com.

Select if you would like to enable the AVS ( Address Verification System )

Select if you would like to enable the CVV2 ( 3-4 Digit Security Code )