i was wondering how i would get pop-ups within flash to use on a website, for picture enlargements.

Forms in flash.
i would like to use forms for a forum type page, if not possible in flash, could someone tell me how to do it in HTML, coz i really cannot be doing with getting a free on and having banners and pop-ups all over the place.
and one more thing, a mailing list form. where a person will enter their email address in a box and when the submit button is pressed a box appears saying 'thank you, please check your mail for a conformation' or something along those lines, with a standard layout email being sent to the address.

i will be very grateful if someone could point me in the right direction.