They are all template based errors. If you look at the w3schools validation (http://validator.w3.org/) it tells you the code that is not XHTML vaild, so just go into the templates, find the code, and learn XHTML to make it correct (if you don't already know it thoroughly). A hint: Don't forget to add " />" after tags that normally have nothing in between (Such as image tags, line breaks, horizontal tags, etc...) For example, <img src="test.gif"></img>, would become <img src="test.gif" /> - Notice the </img> tag is taken away and replaced with a " />" (don't forget the space.)