getting values from multiple select

Hi gang- I am working on a javascript box that will allow the user to drag values from one select box to another. I will use this box to set the values. This is a standard, multiple select box. On the next page I need to figure out what PHP is doing with the data coming in. If I send 5 fields to the next page PHP will show me one when I echo the variable to the page. If I try to split the varaiable I still get only one value in the echo. Tried to reponse.write it in asp and I get the string with comma seperate values. Help! Thanks, -Scott --