Thanks for that pointer - now carried out all the changes in the .txt apart from the ones marked 'CSS/Jump menu only'.

I still have the situation as yesterday though, that clicking 'modify' in the Avatars/Categories section takes me to what appears the right page .. then I click through to the uncategorised Avatars, and that's fine too .. but there's a text 'link' near the bottom that says 'New Avatar Category'. This isn't in fact a link and clicking it does nothing. I need to reate new categories in order to put my avatars in them, so any idea how I can fix this or why that link isn't working?

Thanks!