I have used the following code in order to insert date: !--webbot bot="Timestamp" s-type="REGENERATED" s-format="%A %d %B %Y" -->. While the date changes automatically on my site on the hard disk, it does not change on the uploaded site.
Have you ensured that your FrontPage Extensions are enabled on your hosts server ?
Often upgrading to include the FP Extensions does not result in having them turned on by default. You usually need to manually select them using your web hosts control panel, after which they will be active on your domain.