Looking to make a payment on your account? Windows West uses the most advanced payment integration system in the world with Paypal and accepts all major credit cards. Just enter your invoice/order #, company name/acct #, first & last name, and the total amount of how much you want pay. If you have several invoices/order #'s you want to pay for please separate them with a comma. From there you will be taken to the final submission page to complete your payment. All payments must be $10.00 or more as our invoice minimum is $10.00.