I have just started fiddling around with HTML and PHP this summer after not touching it seriously for a couple of years. I never produced "valid" html by a long way when I used to do it. If I use w3 to validate the code what doctype should I use for standard code? HTML 4.01 strict or maybe Transistional or should I aim to validate it to XHTML 1.0 (either strict or transistional)? Does it particularly make a difference who I am aiming it at as to what I choose? Is there always one that 99% of the time I should use? Thanks for any input Ric.