Anyway, I had fun finding where to switch my keyboard so I could use the layout. In Windows, you do it by switching to an American English International Keyboard layout (Control Panel -> Regional and Language Settings, I believe... not in Control Panel -> Keyboard like you'd expect).
I found where to change it. There are lots of options. In addition to the language settings, there are variants in the language settings (dvorak, international...)
In Kubuntu with KDE, I found it in:
System Settings -> Regional & Accessibility -> Keyboard LayoutFor reference:
You can set up other options by using the tabs in the top (Switching Options Tab with "Show indicator for single layout" checked gives you the list in your taskbar so you can easily switch back and forth between keyboard layouts.
The only difference I notice from Windows is the cedilla. The comma key does NOT give the cedilla. You have to use the RIGHT ALT key, and then type comma. This gives you "ç"