Also, it's not very likely that being included in the servers.ini list will make your network a lot bigger.
I second that.
Personally, I've never ever connected to a server from the server list randomly. Nor have I ever joined any of the channels from the default channel list that comes with mIRC.
As a matter of fact, the first thing I do when installing a new mIRC (on another computer), is delete all the channels from the mirc.ini.
Being in the server/channel list is highly overrated.
Greets