OK, so I've copied a Magento 1.9 site over to a new server. I followed the answers to this to get my site working (instead of it redirecting to the old one).
My problem now is that I can't access the admin panel. Every time I do, I get the following message:
Not Found The requested URL /admin was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
This makes me think there is something else I need to get working.