Debug Verisign Payflow Pro

Hi, I need someone with EXPERIENCE to trouble shoot Verisign Payflow Pro. It's properly installed but the [login to view URL] file is not connecting to the payment gateway. You have to have experience here. The server is Windows 2003 and IIS behind a router. Ports 80 and 443 are open. Earlier there was a create obj error, when test transactions were run through the web site. So I reinstalled the latest Verisign com object for Windows and it corrected the error. So this doesn't seem to be an installation or file problem with the com object. It appears to be an issue with the server. The transactions are in the web site db, but the credit card info is not passing through the payment gateway. This is system admin work, but you must have experience with Payflow and their gateway. Thanks