Shoutbox

Domain names can't really be changed. You would have to register a new one and make sure it's set up to point to the right place. You might as well keep the old one until it expires since you've paid for it already.

If you are using URL redirection services (like cjb.net, dot.tk etc), not your own proper domain name then you can just sign up for a new one. Again, you can leave the old one as well as there sin't a need to remove it and it will only help people find you.

PS There isn't a "Off-Topic Help" but this is the Tech Talk and really is the proper place for your question to be.