How to change the dateCreated of a blog entry via XML-RPC

Hi,

I've setup a blog with Drupal 6. I want to populate my blog via XML-RPC (to be able to write my prose in bus or tram on my EeePC). But sometimes, there'll be some delay between the writing and the posting. So I want to upload my post (stored in a file on my local filesystem) via XML-RPC, but changed the createDate to the created timestamp of the file.

Can you tell me how to do that? Is there an existing module?

Thanks in advance,

Emmanuel Di Pretoro