how to replace mac default finder with alternative finder so that the default finder is disabled?

I'm using another finder instead of the apple default finder, however, the problem is the default finder still shows up whenever I try to upload an image to the web, or when I decompress a file, the default finder pops up instead of the alternative finder i am using. It is annoying that I cannot set the alternative finde all throughout the system, is there a way to change it? Thank you very much.