I stopped using iWeb some time ago. The inability to work with php did it for me. You might look at setting your blog up on wordpress or blogger and simply link to it from your iweb site. wordpress and blogger offer the ability to set the date to any value you like, though I don't know if they let you hide it completely. If you want to hide the date completely, perhaps you really aren't looking for a blog but a static page solution. Do you want the entry with the hidden date to be sticky at the top of your blog or do you want it to scroll away as new entries occur?