Very rarely, you may need to configure things such as window and packet size, or turn on tracing. In normal circumstances, you never need to do this. To configure advanced connection information: 1       Open the FirstClass Login form. If FirstClass is already running, choose Collaborate > Connect. 2       Make sure the settings file you want to configure is selected at "Address". If the settings file is not listed, click Browse to search for it. 3       Click Setup. 4       Click Configure on the Service Setup form. 5       Update the Advanced tab of the configuration form.