Goooing Madddd!

I am going mad im tryin to program a flash game which uses php to hold the co-ordinates but ive been tryin for the last week to even get the variables bk not even started making the game coz of it… ne whos ive looked on countless website to find how to bring bk varibles but IT DOESNT WORK i go on dreamweaver n make a php file use all the <> stuff and when i try to echo a variable it act like it dosent exist and nothig come up string work thing but nothing im going mad and i would suerly like some help