IS it possible to change your host name

Is it?

mine Tha_Kif is [email protected]

 

there's a multitude of ways, but it's restricted to opers only, or people who have a vhost defined in the configuration file.

 

like opped on the server?

 

as in you're an IRCop, and have usermode o

 

Many ways you can change your host-name. You could switch to a new ISP (I wouldn't suggest this) or purchase a BNC which provides a BvHost (But most BNC's have ban evading in their policy) or an IRCop could grant you a vHost.