Note: It is the first time i have tried making a gedosato configuration so i can't really offer useful information if this doesn't work for you.

I have included a link to the gedosato tool below in case you don't have it and further down are the configuration files i am using. If your desktop resolution doesn't match what is displayed in brackets this may not work for you.

Gedosato Download Link:
Download Link [blog.metaclassofnil.com]

My Configuration Files - Laptop (1633x768) and Desktop (1920x1080):
Obscure 1 + 2 Config[www.dropbox.com]

1. Download GedosatoUpdater.exe using the link above.
   
2. Run the updater and select a folder to install and run the GedosatoTool from.
   
3. Download my configuraton files.
   
4. Extract the contents from the .rar file and browse to the folder you need (Laptop or Monitor) and copy the config folder inside it.
   
5. Open the folder where you installed GedosatoTool.exe and paste the config folder in here and make sure to replace or merge the files and folders if asked.
   
6. Start GedosatoTool.exe and click on the user whitelist button. Add the entries below to the bottom of the whitelist and then click save.
   
   Obscure
   Obscure2
   
   
7. Click Activate and the button should then be greyed out.
   
8. Start Obscure or Obscure 2.
   
9. Go into options and select one of the resolutions shown below.
   
   For Laptops - 1000x768
   For Widescreen Monitors - 1440x1080
   
   
10. Load a save and you should now have fullscreen mode.

1. *May not be related but useful to know*. I was unable to unpause the game without using a joypad while using a custom resolution.
   
2. If you use one of the custom resolutions and then try to start the game without gedosato the game will refuse to start. To get around this start the game while the tool is running and select the default resolution for your monitor and save. You should then be able to start the game without the gedosato tool.