This tutorial should be a good start.
of course there are quite a few mIRC scripting sites around.
www.mircscripts.org is a good place to look as well
You could always try
this too.
always be careful of what you put in your remotes, aliases, and popups. Don't put anything there unless you know what it is or you know you got it from a well trusted source. Most good scripting sites will look through scripts for back doors and things like that.
