Spell check has been a long requested feature. It would take another vBulletin hack to make it possible on server side. In the mean time I would suggest a client side solution such as a program called IE Spell or simply compose your post in a word processor like Word and copy and paste it over, that’s what I do.
In reply to your second question, I think what you are looking for is available now. On the main page look in the upper right hand corner for a link called “View New Posts” here’s the link http://www.mp3car.com/vbulletin/sear...&action=getnew