You could just add the identify command to mIRC's Perform section. Follow these simple steps:
1. Go to the Perform dialog - ALT+O > Connect > Options > [Perform...]
2. Click on 'Add'
3. Press 'F' to scroll down to the F networks, then find FreeNode and click 'OK'
4. In the box, type /msg nickserv identify password
5. If it isn't checked already, check the box at the top saying 'Enable perform on connect'
6. Click 'OK' and 'OK' again.
You can then connect to FreeNode, and it will perform that command. You could also use the ON CONNECT event if you'd rather script it, quite simple:
on *:connect:{
if ($network == FreeNode) {
msg nickserv identify password
}
}
Regards,