ok, a couple of things:
1) who would like a !subnetban script, banning them and their whole subnet?
2) ive heard a load of ppl ask for the scripts wizard to be able to PM instead of say, this can be done already..
Just add !command, and then the reponse should be like:
/msg $mta.name($1,$2) message.
In that format will do fine, for whatever command. Remember the scritps wizard responds to all mtama commands as well as mIRC commands, so try them out