that means u are more likely to go for a web interface. You can.
1: Start with a password secured server for start and enable the firewall to let only specific IP's of your dealers to be allowed.
2: Set up a database and spend some time on getting the structure etc , coz though it is easy sometimes to edit later but sometimes its not. Fix a good DB structure.
3: Start setting up forms that will pick up data from DB and display you the status and then order/preorder can be booked.
4: In the extreme case you can use Amazon excellent SOAP/REST service to add good pics/latest data to your DB.
If u need any help just be specific and shoot