No reason to ask a question twice. If anyone feels like answering it, they will, but it may take some time. If you want to remind us of a question, top the old one instead of duplicating it.
Xanga is a community of online diaries and journals. Also known as a blog.
Go to http://xanga.com/claf/, sign in, find the section of your "Look & Feel" that says Header, in the dropdown list select "Input your own Header HTML". That is where you will put your codes, unless otherwise noted. Hope this helps. Feel free to ask other questions about Xanga.