This is quite nice.
I haven't tested it but for the "Notmsg.txt", the ignore list, I heard you can edit an .ini file in your $mircdir which contains an Address book where you can control ignoring nicks by text events in channels, queries, and notices. (do Alt + B to see what I'm talking about).
From there, you can take the lines from the .ini file and then /did them into your dialog.
Just thought that since it's built-in, it would be easier.

Edit: Never mind, I was thinking of something else.