If you're reading this, and are a Transformers fan, then you probably already know that the BotCon 2007 registration forms went up on Saturday. You can find them at www.botcon.com.
Since there was a lot of information released on the brochure that came out at the same time, I've made a fairly extensive update to the Unofficial BotCon 2007 FAQ. If that link's helpful, I'm glad, but I should note that the best information can almost always be found directly at www.botcon.com.
Registration is a little more expensive this year (at $279 for club members), but indications are that this will be the most heavily attended BotCon ever, so you may not want to wait before sending in your registration form if you want to attend and/or get the box set of exclusive toys!