You have to edit your
original blog's RSS feed according to the notes on the
Add Your Technical Blog[
^] page to get the blog feeded automatically.
If you don't have an RSS feed, you can still post the blog by using the "normal" article submission methods and mark the article type as blog.
If you still have problems post a message in the
Article Writing Discussion Boards[
^] because the staff that is able to help with such topics is usually not reading QA.