Hello i need help with my site, movieclips are overlaping

hello, i just want to say thank you for your wonderfull site kirupa, kirupa.com has help me with all my school projects, Im extremely new to the flash actionscript, i have learned a few things but im still lacking on others,

im creating a site in flash cs3 by following the instructions on kirupa.com, this is the first time that im creating a site in flash loading externals swf through a movie clip, im having some issue with some xml image gallery that i have loading at the beggining of the site, everytime i click a button to go to a diferent swf, the images that loaded through xml overlaps with the next swf content

its there a way that i could put a code on the buttons so i would dump or swap the swf or prevent the image from overlapping with my other content?

also, its there way to have a swf open at a certain frame? i have some animation at the intro of the site and everytime i go back to home it replays this animation.

i’ve never posted anything before so please guide me through this if you need any extra information

thank you in advance
angelmateo