Hi there PiMan,
Thanks, I'm afraid I do have further questions! I checked out the documentation you suggested, but I haven't managed to solve the problem yet.
Here's what I've done:
1. Domain Name Change (in database) (lots of changes made)
2. Changing URL directly in database (I followed the instructions but didn't need to do anything - correct url in place already).
3. Changed wp-config: both wp_siteurl and wp_home
4. Relocate Constant
I guess I'm missing something as I'm still getting the '404 not found' error message for every page, except the home page.
The other thing is, after each step above, I've tried to publish a new page to test, but these new pages are also coming up with the 404.
If I could just make all new pages, I could easily re-post everything - I can still access all my old content and there isn't too much of it.
Any help much appreciated!
Thanks,
Cat