Before you can run a virtual machine, you must configure it.
You can create your virtual machine configuration using either the Configuration Wizard or the Configuration Editor. If you are a new user, we recommend that you use the Configuration Wizard to set up a virtual machine. You can edit your virtual machine configuration using the Configuration Editor.
The set of configuration parameters for each virtual machine is stored in a configuration file (.cfg).
You can modify the configuration of a virtual machine while it is powered off. Certain configuration options may be modified while a virtual machine is powered on . For example, removable devices and miscellaneous parameters.