Please don't type in all CAPS it's considered shouting, and bad netiquette.
When connecting to GalaxyNet I found that it often reported 'Error all connections in use' which I imagine means that all their servers are full. If you leave mIRC to continue to reconnect it should eventually get through. I left it to run and after about 40 seconds I got through to their Montreal server.
There is not much else you can do, this is not mIRC's fault. The only way to fix it is if GalaxyNet increases the amount of users their current servers can hold, or link some more servers to better handle their user load.
Regards,