Form Builder

I recenty know about form Generator for drupal. Ow. I just said "ow". I told my spouse now I have one problem less. I can make form with this suppppper generator and give the code on the suitable page. i made a form for my client but as soon as I came to know "where to add this code, start to making me frustrating. Well it is not so long here but my hope and joy of became know was very high. I have written some "expert" to explain me if they know about this all. Till now there is no answere but I am a very optimistic person and hoping to hear from somone very soon..... God must be great.