OK. create the PHP form that handles the variables passed to it, in the flash movie post the vars to the script using load into location under load movie function just enter the path to the script, to get the variables back into the flash file get the php script to output the vars in the formatvar1=value&var2=value&var3=value etc
flash reads all the variables in from one line , do not use an HTML or \r \n or it may not work correctly once you have to output just load it back into flash as you would a text file and set text boxes with the varilabe names, sorry if this is confusing, im in a rush, if you want more help just email me at ash@nexgenmedia.co.uk, ill try to help you more when i have a bit of time
also try www.flashplanet.com and www.flashkit.com for info on reading in files to flash
regards
ash