How can I adapt my HUD or fix my HUD, for all resolutions screen?

I’m trying to adjust my GUI textures and GUIText all screen resolutions but does not work, I should use some special class.?
since I’m using the normal positions in the properties window gui

it should work really well with all resolutions. set the scale to 1 and use x,y of the transform to position them. don’t use fix positions in your GUIText/GUITexture and it will be ok in all resolutions.