When logged in as administrator, I want to change the date and time of a number of posts. How do I do that?

For instance, I have a post that I want to show as posted on Nov. 3rd, although it was posted today (it's actually a post which has been transferred from a different forum system, and in this other system it was posted on Nov. 3rd).

Any help appreciated!  

Best,
Thomas

Not that easy I'm afraid. You would need to download and edit the message file directly.
You would also need a unix time/date convertor

Thanks! I'll try that - shouldn't be too hard after all  

Update:

I've modified the UNIX time/date in one of the individual message txt-files. This works great: the post (when clicked on and viewed) shows Nov. 3rd 12 pm (UNIX time: 1257249600). However, in the message overview (forum mainpage) the message still shows "Posted 2 minutes ago". I figured this had to do with the name of the message txt-file which is based on the original UNIX time stamp - before the modification. So I renamed the txt-file to the new UNIX time stamp "1257249600", but this doesn't help either. So where can I change the time stamp that's being referred to in the message overview / forum mainpage?

Thanks, guys!

Best,
Thomas

Any news on this one?

I did sat it wouldn't be that easy  

I believe the time stamp is also written to the corresponging .msg file.

Correct. And avoid changing the stamp.txt files. Those are the URLs rendered in the forum. Changing those will break all links to that page and all that filename achieves is making the threads files unique.