Add some vehicles to existing car rental reservation system

I have a simple auto reservation system on a car rental web site where I can reserve or block out dates for several vehicles from an admin page. Currently, when a given vehicle is reserved or blocked out, the "reserve" button on the front end is not available and there is a message that states it's not available. I have approximately 5 more vehicles to add to this system. I'll need the same process applied to them. Classic asp and need it done quickly! Must be able to start immediately. Payment released after 7 days of testing for bugs. Budget $60