NopCommerce has really done excellent job in building an open source solution. However, i have a questions/concern or being novice and need a solution that works.

Lets say, a customer visit the nopcomm site ...

1: adds the item to the shopping cart and click checkout (Assuming paypal standard was setup with the return handler).

2: a register/login pages shows up... or can continue as a guest... (choose as guest)

3: Shipping screen shows up, item is being shipped to NY (Assuming UPS is being integrated) [Api used to get the shipping rates]

4: UPS Rates are displayed (user select ground shipping)

5: Payment section (using paypal so now its being redirected to the Paypal Site)
                [Logs in with a user id and password ] Questions : the user has been registered in CA. will the item be shipped to NY or CA?

also, if paypal premier or business account have the capability to setup shipping calculator... should one do shipping calculation via nopcomm site or let the paypal handle all that and in the return handler pick up the shipping/billing info (if available?)

thanks and wish some one can answer some basic ecommerce questions...