Forums mIRC Help Delayed Join

Don't understand much of that script so I don't think I'll be able to use it, won't be able to add/remove/change things in it,
I do really appreciate the response though. What I specifically need is something that does this:

1: Triggers on a successful connection to the TMI network.
2: Closes all active/previous channels.
3: Begins the joining process (reads a text file for the channels)
3.1: Needs a 2 second delay between each join.
4: Before each join, it checks that there is no current channel with the same name.
5: Upon disconnect, waits 30 seconds then triggers a connection to the TMI network.