Hello fellas,Im an old adept of HTML and Im trying to upgrade myself to XHTML.-Wich file extension should I use for XHML?In theory, it shoudn't be THAT different, BUT, with IE6, if I use different file extensions the result comes out different too!If I use *.xml extensions(should I use XML extensions for XHTML files?), IE displays the Document Element Tree instead of what I wanted, that would only appear if I would use the *.html or *.xhtml extensions.I am very Confused, can anyone help me out?Thanks a lot.