We hate spam here at Dirt Modeler. We can't make it much more clear then that.
We won't share your information with anyone. Period.
Though we don't have an SSL secure socket setup here on Dirt Modeler, your data is very secure. If paying via Paypal, when you connect to Paypal, you will be connected to a Secure Socket.
Financial information is not stored anywhere on our systems. Paypal sends this shopping cart only an encrypted code that tells the shopping cart that the order was paid for.
The only information stored on this system is your name, address, and the items you've ordered.