Pop up image triggered by box collider?

Questions & Answers
1

How do I make an guitexture appear when an “player” enters an box collider trigger, and disapears when out of it?

2

Enter: http://unity3d.com/support/documentation/ScriptReference/Collider.OnCollisionEnter.html

Exit:
http://unity3d.com/support/documentation/ScriptReference/Collider.OnCollisionExit.html

Set the guitextures’ ‘enabled’ flag true on enter, false on exit. Or set it’s gameObject’s active thusly. Or it’s Renderer’s enabled flag thusly.