First off, as many have commented, the editing outside of mirc isn't easier (Esp notepad). Don't get me wrong, notepad is a very (very) handy tool, but with mirc, you have a tool that will check your structure for you [{}] bottun on top right.
Secondly, if you stil insist on editin outside of mirc, try using the .mrc extension. This way you do not need the [script] and nX= stuff. All you need to do is write your code, and thats it!
Also looking at your code, there isn't an on OWNER Event, that I'm aware of? If you plan on making one, don't you need to use on SIGNAL? I could be wrong..
