To upgrade your plan:

1. Log in to your account at https://mozy.com/login.
2. Click Manage Account
3. Click Upgrade.
4. Choose the Base Plan (i.e. 50GB/$5.99 or 125GB/$9.99).
5. Choose your Billing Period (i.e. Two Year, Yearly, or Monthly).
6. Decide whether you need Additional Storage, and enter the amount of 20GB increments you'd like (If you need 40GB, put a 2 in the box).
7. If you need Additional Computers on the plan, add them in the correct box.
8. Confirm your Plan Summary, and click Continue.
9. Enter your Payment Details in the required fields.
10. Click Place Order to complete your upgrade.