WinISO supports disc burning by using IMAPI version 2.0 provided by Microsoft Windows. So WinISO has the same burning capability with your current Windows system.
You may need to update IMAPI if your system is Windows XP or Windows Vista. For more information, refer to Microsoft knowledge base article 952011: Description of the Image Mastering API v2.0.
An error code will be displayed if burning failed, the meaning of the error code can be found at MSDN: IMAPI Return Values.