Bump for Windows 7:
If you're using Windows 7, you'll have to use Microsoft's official AppLocale located here
(Click~)
Just download that and install it, and hook it up to your La Tale Launcher. Make a shortcut, wherever you saved the AppLocale La Tale at, and use that to play La Tale when you want the bigger font~
I only posted this 'cause I had to download Microsoft's official one to get it to work again, in Windows 7~