[support] Backdating story entries

(delurk) Whilst I am a Drupal advocate by experience, there was one large website I was looking after that was non-Drupal. I have since brought such site into the light however I do have one little bug which I am sure is easily solved if someone points me to the right part of the documentation: Backdating story entries. Basically the site had a blog-like news update section and I'd like to import this to the new site with the dates of the original postings. Thanks in advance, Lev