IRC help? Connection allowed only from a Java client. You matched client class ZDEFAULT

[AntiqueBoy]

I'm new to mIRC program but when I connect to one chatspace server belonged to chatspace.com i got the message:
Connection allowed only from a Java client. You matched client class ZDEFAULT.
Can I anyhow get in that server without use Java ? Please help me if you experienced in IRC.

Thanks for your helps.