If you're a backer you should have received an email from firstname.lastname@example.org with instructions on how to login. If you did not, please whitelist email@example.com in your spam filters and go to http://ckpm.coolminiornot.com, and using the email address you use on Kickstarter, request a password reset.
The Pledge Manager will list the info you put in the survey, and allow you to confirm all the options you'd like, as well as your shipping info.
Once you've confirmed everything and checked out on Paypal for any extras, this list becomes fixed. The only thing you'll be able to change going forward will be your shipping address, and that will get locked 2 weeks or so before each shipment phase.
Also, for those of you who pledged "Fatty", here's your last chance to upgrade to "Abomination". Don't get left behind!