How to GUI Resize and Reposition accordingly to AR and Resolution?

Hello, I'm working on a Space Shooter that looks simiiar to space invaders. What I'm tying to figure out are a few things..

How to resize and reposition the GUI texture depending on Aspect Ratio AND resolution.

I'm using a GUI.matrix for all these things. So far, the GUI texture scales appropriately when aspect ratio changes, and repositions when the aspect ratio changes. BUT when I change the scale of the game window (resolution), the GUI texture moves in an erratic way. I want the txture to stay in the same place when I scale the window.

So what I'm trying to figure out is this..

Scaling

When Aspect Ratio Changes: GUI Texture scales relatively up or down.

When Resolution Changes: GUI Texture should scale relatively as well.

Reposition

When Aspect Ratio Changes: GUI Texture moves in the appropriate spot

When Resolution Changes: GUI Texture stays in place!