mIRC is shareware, and by using it you agree to the terms of its license. That means you can only use it for 30 days without paying. Window popping up or not, it doesn't make a difference.
Don't like the license? Find a different IRC client that has a license that you agree with. It doesn't matter what you think of Khaled or what he does for a living.
id hate for some elite khaled fan to insult me.
You might be ugly and I bet that you stink.
-chris (elite Khaled fanboy #1!)