Well, that's odd, but if you say that even kopete doesn't work for you maybe you make a common mistake in your configuration.
I already posted the message I receive when I try to use Kopete. It states that 'it doesn't support offline sending....' blah blah so check the protocol. Yahoo Messenger supports it, though. Even when Kopete worked, the emulation wasn't all that good. But, now I am unable to use any IM in Linux, apparently.