pass url to php

[Mickie D]

i need to pass a url to a php page and i need the php tag to take the code in the url and perform an action on the page

ok let me explain a little better

if a member clicks this link below

http://www.mysite.com/forum/store.php?item=ipod

i want to be able to send that url to the store.php and where it says ipod i want the php page to display ipod listings from my store

i am not bothered about displaying the stuff as i can work that but i need to know how to make urls be able to make the php page work (i know it already works because the search engine on that page can display all this from my store page)

i know some php but i would really appreicate some help with this

Regards
Mickie D