How do I update site URL on popups

[RobinPriestley]

hello there,

we have been building a new forum on our site, which sits on a rented server here:

http://s169220632.websitehome.co.uk/

however we have now pointed our URL http://www.princecharlescinema.com to that server and are up and running.

When I set up the vbulletin i set the site url as the websitehome.co.uk one, I would now like it to only refer to the princecharlescinema.com name.

I have updated the site name in the VBulletin options panel, however when you log out it still has the old name in the pop up that appears.

is there anywhere else I should change the settings?

Thanks in advance for any help.