If you've sent in your deposit, then you should go back and check your status page on the undergrad admission website and see if your deposit has been processed (click on "Status Report" or whatever its called).
If your deposit has been processed, then you don't need to wait for an actual confirmation to activate your UVa account/get your UVa-email.
Go to
Activate Your Student Computing Accounts and click "Start your account activation now"
You're supposed to read their guidelines and take a quiz to prove you did so, but the quiz is really easy.
After you pass the quiz you'll get your ID and password.
I just got my email, and I changed my network on FB. It was pretty exciting :-)