Help - strange code in my website!!

[NooNoo]

Theirs! But you need to help yourself by using the .htaccess file to give you a bit more security... starter tutorial here
Who is this hosted by?

[Pluto]

Hi

Thanks for that. Sites hosted by servage - you won't be surprised to know that I've had no reply from them to my last lot of questions (!) nor I suspect will you surprised to learn I am not the only one of their customers who's had this kind of problem. Found this site this morning ..
http://www.befuddled.me.uk/2008/11/s.../#comment-2300

burtonartgallery.co.uk now clean but another got one infected now!!! Am on the lookout for new host company!

[NooNoo]

have you looked at your server logs - you are looking for IPs that visit the site without viewing a page or the same ip visiting more than one of your sites.