No, you do not need to re-register.  We moved all the customer accounts into this new system.

Our old cart associated accounts with your email address.  The new cart allows you to choose a username.  During our customer import, since we did not have a username for your account, we simply used your email address.

In order to log in, you can use your old account email address and the same password you used before.  Let us know if you have problems logging in and we'll do our best to get it sorted out.