I begin a site and started to use it before June 2007. I used an automated system to post some articles on it about some popular topics, but many articles are really written by myself without any copying. I had google indexing my site and I had good traffic.

later all indexed files in google are deleted and google never re-index my site again even when I re-construct a totally new site.
now I re-construct a wordpress blog on it, and want google to re-index it. anyone knows how get re-indexed?
thanks