Section 
            A - General Integration  
      
      On the invoices 
        and signup pages there are tags you can use in forming links or forms 
        to third party systems. An overview of these tags are below: 
       
         
           
            
               
                {name} Clients 
                  Name  
               
                {address} Address  
               
                {city} City  
               
                {state} State  
               
                {zip} Zip 
                    
               
                {country} Country  
               
                {service} Service 
                  Ordered  
               
                {amount} Invoice/Order 
                  Fee  
            
           
         
       
      
         
            
            
          Section 
            B- 2Checkout Integration  
      
      To integrate 
        2checkout you need to edit two files in the templates, one is the email 
        invoice which gets sent to customers, the other is the signup page when 
        you users signup. 
      Step one 
        is open up the include/tpl/register_success.tpl and insert the following 
      <form 
        action=https://www.2checkout.com/cgi-bin/Abuyers/purchase.2c method=post>2CHECKOUT_USERNAME  
       
        
          
      Now to setup 
        payment in invoices you need to add this link to the invoice.txt file 
         
      https://www.2checkout.com/cgi-bin/sbuyers/cartpurchase.2c?sid=ACCOUNTNUMBER&total={amount}&cart_order_id={id} 
      
      
         
            
            
          Section 
            C - PayPal Payment Integration  
      
      Step one 
        is open up the include/tpl/register_success.tpl and insert the following 
      <form 
        action="https://www.paypal.com/cgi-bin/webscr" method="post">me@me.com "> 
       
        
  
      Now to setup 
        payment in invoices you need to add this link to the invoice.txt file 
      https://www.paypal.com/xclick/business=PAYPAL_EMAIL &item_name={service}&item_number={invoice_id}&amount={amount}