Validator indicatees the site is NOT XHTML 1.0 Transitional or Strict

So, I run my site over to the validator and what do I see??

This page is not Valid XHTML 1.0 Strict!

Below are the results of checking this document for XML well-formedness and validity.

1. Error Line 129 column 9: document type does not allow element “li” here; missing one of “ul”, “ol” start-tag.

• (edited by me….) [a href=”http://wordpress.pocosin.com/wp-register.php”>Register</l
  The mentioned element is not allowed to appear in the context in which you’ve placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you’ve forgotten to close a previous element.

  One possible cause for this message is that you have attempted to put a block-level element (such as “” or “<table>”) inside an inline element (such as ““, “<span>”, or “<font>”).

  Ouch. I don’t even see “Register” as on option on the page. Where do I find the text in the right column? Where is the error or where are the errors?

  http://wordpress.pocosin.com/

  C