1 If you want to you can go back and re-edit the times of the other posts, but I wouldn't really bother.
Oh, and if you aren't using mozilla, there's a handy set of "cheat" buttons across the top of the wrting box. So say you want italics, highlight the text and then click the "i". If you want to link to something, highlight the word that you want to be the link, then click on URL: a box will come up where you can type or paste the url to the link. Easy as pie! (if you are using mozilla--good luck in html class!)