Umm..I'm not sure what you mean by "non-mirc-using hosts".
Do you mean hostnames? host machines?
I'll try to answer, but if it's wrong it's only because I don't know what you're on about :P
Adding a host to a shitlist has nothing to do with what client their using....it will detect the hostname, and kick on that if it's in your shitlist - nothing more is done!
If you meant putting a shitlist into remotes on another IRC client (other than mIRC) then you probably could, but not in the same way as mIRC. Different clients have different methods of scripting...
If the above have nothing to do with what you were asking..sorry...maybe it's just me, I just woke up - let's hope it makes sense to other people :P
P.S. Scripting questions really should be directed to the
Scripts and Popups section of the Message Boards
Regards,