If you're running behind a firewall you might be better off installing MIRC as an application and running that : it has firewall settings you should be able to configure to your needs.
You can download MIRC from
http://www.mirc.com/
Someone has probably said all this before, but
To set it up to connect to the FOREX room,
When it tries to connect, there's a list of servers, and an "Add" button, click on this
Enter as description Othernet
IRC server irc.othernet.org
Others as default
confirm, and enter your preferred nickname on the page, then ensure "Othernet" is selected from the list of servers
then on the irc\perform tab on the left hand side add the following to "On connect perform the following actions"
/join #t2w-forex
Then try to connect, with any luck you'll be able to see the room now *and talk* if you wish