Implement a new class called 'XConverter' with which we convert strings to 0 if they would otherwise throw an exception. I refuse to add try-catch blocks to every Convert.ToInt32(string) calls.
Add a 'Test connection' button to the Settings form, decrease the height of the settings form by 20 pixels and also add some 'protection' to the form; it is no longer possible to save connection information if it's not possible to establish a connection with this new information.