"Run As" window

 
I run MT4 Build 482 and everytime I start the application I get a "Run As" window before the app opens.  Does anyone know how to stop this window opening forever?
 
Don't install in \program files* on Vista/7/8
 
JoeSDF :
I run MT4 Build 482 and everytime I start the application I get a "Run As" window before the app opens. Does anyone know how to stop this window opening forever?

Are you aware of this :

Attention! From August 1, 2013 desktop client terminals older than build 500 will be no longer supported. This limitation does not apply to the mobile terminals.

 
No; I was not aware of this. I get my MT4 from MB Trading and apparently I must use what they furnish.