Everything seems to be where it was before - a couple of glitches in some of the admin settings but that's all fixed now (or will be really soon)
Could I be a pain and ask you guys who are registered on the site to check your details and fics? Plus, please change your password - I've no way of telling right now how much info the hackers got from the database but it's possible your passwords were copied.
Thank you all for your support! I'm now going to pour myself a very large glass of the particularly good Shiraz I bought this afternoon and switch off the computer!