Admitted students can use this entry to talk. I imagine you might also want to join the UVa Class of 2013 Facebook group to chat with your future classmates.
I'll be back tomorrow to answer questions, but know most of your questions can be answered online. Just below your letter are buttons to accept or decline your offer. If you accept, you will see a button to let you pay your tuition deposit online (it's an e-check system...you type in the numbers on the bottom of your check). On the SIS login page, you'll notice that a link to the Orientation page has been added. For now, you can just read the info. On April 1st, I believe orientation registration will open.
You have until May 1st to make your decision about whether you'll come to UVa or not. If you decide to go elsewhere at some point in the coming weeks, I hope you'll decline the offer immediately via your self-service page. That will allow us to move to the waitlist more quickly.
Again, congratulations! We are so lucky to have you considering UVa!