 - Open the Start menu, then navigate to PlayOnline > FINAL FANTASY XI > FINAL FANTASY XI Config. 
 - When prompted to allow the file to make changes to your computer, click "Yes". 
 - On the "Textures" tab, I suggest setting both "Texture Compression" and "On-screen Maps" to "Uncompressed", and "Fonts" to "High Quality". 
 - On the "Misc" tab, I suggest un-checking "Show opening movie", and checking "Enable hardware mouse cursor".  Click "OK". 
 - Click "Yes" to save the settings.