I have tried w3schools, tizag, even a horrible tutorial from Google Code, and can not understand how it works - I understand the browser checking, but its the calling of the PHP script that I don't understand, and while I can copy code from the website and it works, if I then change the PHP script, the Ajax still processes the old PHP. So if anyone would like to give me pointers here or over MSN, it would be incredibly appreciated, Cheers, BP