VirtueMart Forms Modification - Remember User Input

Need VirtueMart expert to modify an existing live website: www.jenswreaths.com. On all forms for this site, we need to send data back to a form to refill it with user input after it hasn't passed validation. The forms currently do not remember what the user had just inputted when they go back. (For example, when a customer adds a new shipping address and makes a mistake, they are asked to re-enter their information. We need the form to remember the data they have already input instead of requiring them to start over and type in everything again.) 1. This site has been customized to allow multiple shipping addresses - user may add a different shipping address for each product in the cart. 2. This site allows "Visitors/Guests" to complete orders as well as "Registered Users". Forms need to work correctly for both. Form #1: After adding products to cart - view cart and click on "CLICK HERE to add new address" button. This is the first form that needs to "remember data". Form #2: Go to CheckOut page. Click on "New? Please Provide Your Billing Information". This form needs to remember data also.