how to make gui fonts bigger?

how do i make the gui fonts a little bigger? i dont really have good eyesight and the fonts in blender are very small.

Go to User Preferences Window(Hold Left Mouse button on menu in the 3d window and pull it down) . Under Language and Font Tab Click to active International Fonts , Select your font from the box below it, and font size just in the side of it. . follow this screen shots::smiley:


thanks Maju! that worked!