so this thread seams to have taken over for this other one you started:
between these 2 threads i can cobble enough detail about the issue to tell what the cause is:
You are are using CSS Form Builder 1 with Dreamweaver CS5. CSS form Builder 1 is not compatible with Dreamweaver CS5, it was replaced By CSS Form Builder 2 before Dreamweaver CS5 was released. you will not be able to use CSS form Builder 1 in Dreamweaver versions above CS4.