hide the cursor!"

[Melssj5]

Hi, How can I hide the cursor when in fullscreen?

[EgonOlsen]

In OpenGL mode? If so, have a look here: http://www.lwjgl.org/javadoc/org/lwjgl/input/Mouse.html
You either have to set the mouse to "grabbed", which will automatically hide the cursor or use an empty image as the mouse cursor. When using the software renderer, the same applies there too. You can have a look into the MouseMapper in the Paradroidz sources for this.