"Always use (blank) to open this file type"

I was trying to open an ICA file. My computer didn't recognize how to open this file type so it promted me to select an application to use. The default box- always use this to open this file type- was selected. I did not choose wisely. And now it automatically tries to use the application I selected in error. How do I get me computer to allow me to select something different to open this file type? And what do I use to open an ICA file? Any help would be appreciated!

 

Hold down the SHIFT button and right click on the file > select 'Open With' then select 'Choose Program'. This will give you the option to choose what program you want to open the file with.

I'm sorry I don't know what program should be used to open an ICA file.

 

.ica = IBM IOCA Bitmap Picture Image Object Content Architecture)

So I'd try a picture viewer.